Evolution by Jen Bradley

Homo naledi's brain

jenbradley5_ — 2024-01-04 20:06:07 UTC

Homo naledi likely had social emotions and advanced communication, but researchers are unusure if H. naledi possessed language. Anthropologists examined the endocast of the H. naledi skull and reached different conclusions about the implications of the grooves and ridges found on the interior of the skull. Read more here: https://www.sciencenews.org/article/homo-naledis-brain-shows-humanlike-features

Homo Neanderthalensis: Creativity

mav5719 — 2026-01-11 05:17:36 UTC

Homo neanderthalensis, also known as Neanderthals, were more intelligent than people once believed. Archaeologists found red and yellow ochre “crayons” that Neanderthals shaped and used over 100,000 years ago. These pigments were not needed just for survival, which suggests they were used for symbolic reasons, such as communication or showing group identity. The fact that Neanderthals reused and shaped the ochre shows they could plan ahead and think creatively. These findings show that Neanderthals had complex thinking skills similar to modern humans.

https://www.livescience.com/archaeology/human-evolution/crimean-stone-age-crayons-were-used-by-neanderthals-for-symbolic-drawings-study-claims

Homo Floresiensis

sjk7136 — 2026-01-12 19:33:10 UTC

The Homo Floresiensis nicknamed the hobbit was one of the most recent discovered early human species rumored to live about 100,000 to 60,000 years ago in Ancient Asia/Indonesia and the Island of Flores. The Homo Floresiensis was to be around 3 foot 6 inches in height and around 66 pounds on average and was aid to have a tiny brain, large teeth, shrugged/forward shoulders, had no chin, a receding forehead, and very large feet. Even with their tiny brain they were said to have made and used stone tools which dated back to 190,000 to 50,000 years old and they used these tool to hunt things such as small elephants, large rodents, and possibly even Komodo Dragons. It is also said they have used fire to also cook their meals. The website I researched the Homo Floresiensis says their tiny brain may have been because a case of island dwarfism which is an evolutionary process that results from a species being in long term isolation on a small island with a limited source of food and predators. This kind of dwarfism also was shown on the small elephants on the Island of Flores proving that the Homo Floresiensis may have been the same way. Sadly it is unknown if the Homo Floresiensis had any kind of language but even with their tiny brains it seems they were pretty cognitive and kind of smart for their time being able to hunt, make stone tools and cook their food.

^{https://humanorigins.si.edu/evidence/human-fossils/species/homo-floresiensis}

Homo Heidelbergensis

vmt5206 — 2026-01-12 20:05:52 UTC

The Homo Heidelbergensis had gathered a massive horse carcass nearly 500,000 years ago and methodically slaughtered it. Harvesting their meat, internal organs and splitting the bone for bone marrow. Since these times, archaeologists have discovered tools made from horse parts, making them part of the oldest non-stone tools in Europe. The bone hammers were most likely used to build, carve, and knives that were also discovered throughout the site. The intricate tools and butchery used by this culture strongly indicate that they had cooperative and culturally complex behaviour and a high sense of awareness of the qualities of different materials.

https://www.smithsonianmag.com/smart-news/europes-earliest-bone-tools-hint-early-hominin-sophistication-180975564/?utm_source=chatgpt.com

Homo neanderthalensis: cognitive ability. (The Neanderthal Brain-Cognition)

sahijuu — 2026-01-13 03:37:24 UTC

Neanderthals had brains that were bigger and differently shaped than modern humans (Homo sapiens). Their cranium had an elongated occipital (rear) region known as the "occipital bun", which raised questions about how regional brain differences affected cognition. Archaeological record that we know suggests that most Neanderthal behavior such as hunting, foraging, and toolmaking was similar to modern humans in the same time period, 50,000 years ago. However recent evidence suggests that Neanderthals also had the potential for symbolic and abstract thinking, which was previously only been attributed to Homo sapiens. This suggests that they had been broadly capable of the same mental tasks as anatomically modern humans. CT/MRI based endocast reconstructions suggest that early Homo sapiens had a larger cerebellum than Neanderthals. In modern humans this region supports motor skills, language processing, learning, reasoning, and social abilities. Endocast data from fossils such as the El Sidrón child indicate Neanderthal brains grew more slowly after birth, and reached about 87% of adult volume by age 8 compared to 95% in human children, which implied a prolonged maturation process.

https://www.sapiens.org/biology/neanderthal-brain/

Homo Denisovan: Cognitive Ability

sgatch125 — 2026-01-13 15:54:53 UTC

Denisovans were a group of ancient humans who were closely related to Neanderthals and modern humans. This article looks at what may have made their brains develop differently. The researchers studied genetic changes that affected microRNAs, which are like small controls that help decide how active certain brain genes are during development. What they found was that Denisovan related microRNA changes were connected to stronger activity in genes that are most active after birth, during the postnatal brain development. Neanderthal related changes were more tied to genes active before birth during prenatal development. The authors explained that changes like this could've affected how the brain grew and functioned over time which could relate back to learning and problem solving ability. They also say that this matches what has been found at Denisovan sites, where there is evidence of advanced tools and decorative objects, which suggest that Denisovans may have had strong thinking and cognitive skills.

Homo Denisovan

gej5092 — 2026-01-13 21:52:55 UTC

Although there is very little research done about the Homo Denisovans, researchers obtained one of the greatest studies of interbreeding when they found a fingertip from a young girl. They were able to accomplish a DNA analysis, which showed that the fingertip came from a young girl who had a Denisovan father and a Neanderthal mother. Researchers have also determined that there is a strong chance that Homo Denisovans had a relatively advanced intelligence in comparison to others.

https://australian.museum/learn/science/human-evolution/the-denisovans/

Homo Naledi

2026-01-14 17:45:46 UTC

Homo naledi is an extinct hominin species discovered in the Rising Star Cave system in South Africa and first described in 2015. This species is notable for its unusual combination of traits, including a small brain similar in size to much earlier hominins and a body well adapted for upright walking, with hands capable of precise gripping. Fossil evidence suggests Homo naledi lived between approximately 236,000 and 335,000 years ago, meaning it overlapped in time with early Homo sapiens. One of the most significant and debated aspects of this species is the evidence suggesting intentional placement or burial of the dead deep within the cave system, which would imply complex social behavior and possibly symbolic thinking despite its small brain size. This challenges long-standing assumptions that advanced cognitive abilities and social practices required large brains. Although no tools or art have been directly associated with the fossils, the anatomy of Homo naledi suggests it may have been capable of tool use and cooperative social behavior, offering important insight into the diversity and non-linear nature of human evolution.

https://elifesciences.org/articles/89106?utm_source=chatgpt.com

Homo neanderthalensis – The Neanderthals

lowcountrygirl07 — 2026-01-14 22:49:18 UTC

This species existed approximately 130,000 years ago. Key specimens include Le Moustier, Shanidar 1, La Ferrassie 1, Amud 1, Maba, La Chapelle-aux-Saints, Neanderthal 1, Kebara 2, and Lagar Velho. The name itself for the species means 'Human from the Neander Valley.' Their remains have been found across Europe.

They are not our direct ancestor and there is evidence that at some point they did interbreed with humans. Their brain size was actually larger than the average human brain. They had a complex cutie and reasonably advanced tool kit. There are many theories for why this species no longer exists, one being that they were replaced by humans as we know it.

Homo Neanderthalensis

gbn5086 — 2026-01-15 00:52:38 UTC

Neanderthals Were known to be a distinct species of human who lived across Europe and parts of Asia about 40-400 thousand years ago. Neanderthals shared a common ancestor with modern humans as well as living alongside early Homo sapiens for a short period of time in their existence. With this meant that the Neanderthals would end up interbreeding with the Homo sapiens giving some people alive today very little percentages of neanderthal in their DNA, as little as 2%. As far as how they appeared, Neanderthals had large brains and strong muscular bodies as well as stocky physiques to suit cold climates; They made clever tools, hunted large animals and worked with fire. Fossils and DNA evidence prove that the Neanderthals were adaptable and resourceful species, capable of being caring for one another, burying their dead, and eating a diet that varied with nutritious meals including meat, plants fungi, and shellfish. The extinction of the Neanderthals likely stemmed from climate changes and competition with modern day humans.

Homo floresiensis

ajb8625 — 2026-01-15 05:31:02 UTC

Homo floresiensis (often called “the Hobbit”) is strongly connected to Liang Bua Cave on Flores Island which is described as “the type site of Homo floresiensis”. Archaeologists explain that the site contains “a rich archaeological record spanning from 190 thousand years ago (ka) until the terminal Pleistocene”, showing that Liang Bua preserved long term evidence of ancient human life. However, the article also points out that shellfish were not a major part of behavior during the Pleistocene, stating that “mollusks were not a focus of hominin activity at Liang Bua during the Pleistocene, including that of Homo floresiensis, either for subsistence or the production of artifacts”. Instead, shell use became much more common in later time periods, and when humans were collecting shells they often did it for food. The study found many shells that were intentionally opened and explains that “deliberately breaking open the apex of a shell is almost certainly a strategy to obtain the meat for human consumption”. The researchers also found evidence of tool and art-related behavior because “14 shells showed clear signs of cultural modification: 12 were made into beads, one appears to have been used as a borer, and one as an adze or scraper”. This shows that the Liang Bua site is important not only for Homo floresiensis, but also for understanding how later human communities used tools, food resources, and symbolic items over time.

https://www.sciencedirect.com/science/article/pii/S2352409X24004280?

Homo heidelbergemsis: Social Life and Survival

aql6001 — 2026-01-15 17:20:48 UTC

Homo heidelbergensis lived between about 700,000 and 200,000 years ago and played an important role in human evolution. According to the Smithsonian National Museum of Natural History, this species showed strong evidence of social behavior, especially when it came to hunting and cooperation. They were likely some of the first early humans to hunt large animals using wooden spears, which would have required teamwork, planning, and communication within groups. There is also evidence suggesting they cared for injured or weaker members of their group, showing that survival depended on cooperation rather than just individual strength. Their larger brain size compared to earlier species supports the idea that they had more advanced thinking skills, which helped them adapt to different environments. Many scientists believe Homo heidelbergensis is a common ancestor of both Neanderthals and modern humans, making it an important link in understanding how human social behavior developed.

Homo heidelbergensis | The Smithsonian Institution's Human Origins Program

Homo neanderthalensis

rjb5622 — 2026-01-15 18:37:46 UTC

Recent research conducted on the southern coast of Portugal has identified well-preserved Neanderthal footprints, providing valuable insight into their social behavior and movement patterns. The study records tracks made by both adults and young children who traversed the coastal area approximately 78,000 to 82,000 years ago. These findings indicate that Neanderthals traveled in groups, likely engaged in activities such as foraging or hunting along the shoreline. In contrast to tools or bones, which may be relocated from their original context, footprints capture behavior at the precise location where it occurred. As a result, this evidence offers researchers a more comprehensive understanding of Neanderthal social organization, adaptability, and utilization of coastal environments.

https://www.sciencedaily.com/releases/2025/11/251112111027.htm

Homo Naledi Facial Features

cib5498 — 2026-01-15 21:10:28 UTC

The Homo Naledi has a combination of features. They had hands, wrists, and feet just like modern humans. This species had a small brain, and the shape of its upper jaw was very similar to that of Homo habilis, which is an early human species. Homo Naledi has curved fingers and hip joints. Scientists say it walked on two legs and had very long strides as it walked. Its shoulder position and shape of its fingers helped them climb trees and also hang from them. This represents an ape-like ancestor.

https://www.nhm.ac.uk/discover/homo-naledi-your-most-recently-discovered-human-relative.html

Homo Heidelbergensis

sqn5402 — 2026-01-15 22:10:47 UTC

H. heidelbergensis is a critical human species in the Middle Pleistocene (~130–780 thousand years ago (ka)). We know from several beautifully preserved crania that this species had a large brain, within the lower range of modern human variation, and a less robust face than early fossil humans. We know from their long bones that they were tall, strong people. From their associated archaeology we know they were capable of producing beautiful tools such as the large handaxes found in huge numbers at Boxgrove in Sussex.

H. Heidelbergensis

Homo Heidelbergensis

bap5786 — 2026-01-16 04:53:53 UTC

The Homo Heidelbergensis species originated in Africa and spread throughout Europe between 300,000-600,000 years ago. This species was very big on using and creating tools to hunt fairly large species. The bones and fossils found around the fossils of Homo Heidelbergensis matched those of rhinos, hippos, horses, and other larger animals. They're known to have tools and weapons made of wood and stone used by previous species. They had the materials to create clothing made from animal hide, and figured out how to control and use fire.

https://australian.museum/learn/science/human-evolution/homo-heidelbergensis/

Who were the homo. Denisovans?

2026-01-16 19:27:56 UTC

Denisovans traveled the Earth between about 300,000 and 50,000 years ago, mostly in eastern and southern Asia. They were named after the Denisova Cave in Russia, where their fossils were discovered, although the remains are too fragmentary to be dated accurately. Excavations of the cave began in the 1970s, but it wasn’t until 2008 that researchers found a tiny finger bone in layer 11 with enough preserved DNA to conduct genetic analysis. This analysis revealed that Denisovans were close cousins of Neanderthals. The article states that the two populations interbred around 46,000 years ago and suggests that another interbreeding event occurred about 30,000 years ago, possibly even as recently as 15,000 years ago. This makes Denisovans and Neanderthals some of our most recent ancestral relatives. It also explains how Neanderthals, Denisovans, and modern humans are all descended from, or share common ancestors with Homo heidelbergensis, detailing how these groups interbred and eventually dispersed into Europe. When trying to reconstruct Denisovan physical features, researchers struggle due to the scarcity and fragmentary nature of their fossils, but some traits have been identified. First their molars differed in both numbers and size compared to those of modern humans and Neanderthals, suggesting differences in evolutionary development. Second their jawbones were strongly built and shorter than those of Neanderthals.

The Denisovans - The Australian Museum

mcs6565 — 2026-01-16 20:30:14 UTC

I chose Homo heidelbergensis because this early human species shows clear signs of advanced behavior for its time. According to an article from the Smithsonian Human Origins Program, H. heidelbergensis was among the first to control fire, build simple shelters, and routinely hunt large animals, which suggests cooperation and planning among group members. They also made and used stone and wooden tools, like those found at the site of Schöningen, Germany, which indicate complex tool‑making skills and social interaction. These behaviors point to increased cognitive ability and a social structure that was more advanced than earlier hominins, helping us understand how human behavior and group cooperation developed over time.

Homo heidelbergensis | The Smithsonian Institution's Human Origins Program

Homo Floresiensis: cognitive abilities

yel5025 — 2026-01-17 02:57:53 UTC

The Homo floresiensis has exhibited high cognitive and technological abilities. Research claims that even as their bodies shrank due to evolutionary pressures, their brains reorganized enough to retain the basic cognitive functions necessary to use and manufacture stone tools. These toolkits, which included flaked stones with sharp edges for cutting and processing materials. These were essential for survival in their environment. This showed that they maintained effective problem solving skills over many generations

source: https://phys.org/news/2016-06-homo-floresiensis-tools-shrank-island.html

Homo neanderthalensis

hke5101 — 2026-01-17 17:32:04 UTC

In recent research shows that Homo Neanderthalensis were highly intelligent and socially complex, not primitive as once believed. Evidence from archaeological sites indicates that they made advanced stone tools, controlled fire, and hunted large animals in coordinated groups. Neanderthals also cared for injured and elderly members of their communities, suggesting strong social bonds and cooperation. Some findings even suggest symbolic behavior, such as the use of pigments and personal ornaments. These behaviors demonstrate that Neanderthals had cognitive abilities and social structures similar to modern humans, challenging earlier assumptions about their intelligence.

https://humanorigins.si.edu/evidence/human-fossils/species/homo-neanderthalensis

hkw5349 — 2026-01-18 03:22:37 UTC

Homo neanderthalensis, better known as Neanderthals, have very similar characteristics to that of human beings. Neanderthals were beings that lived in different parts of Europe and Asia and are directly linked back to one of the earliest species known as Homo sapiens. According to this article, Neanderthal fossils are some of the first ever to be found, helping to shape what we know about this species and others like. It is fossils like these that have allowed scientist and researchers to formulate the data and translate the past, connecting the similarities between these species and human beings. There were certain physical attributes associated with Neanderthals. Most were known to have shorter, stronger muscle builds. This allowed for the survival of the species during times such as the Ice Age. The higher muscle mass allowed Neanderthals to regulate these cold temperatures and remain successful. Another physical characteristic that helped them to survive the cold weather was their larger noses. While this may not seem relevant, it allowed for air to warm before entering the internal systems and reaching the lungs. While there are many physical similarities to Neanderthals and humans, there are notable differences in the physical makeup of these beings. This is due to the evolution of time and our surroundings. The earth has evolved, and with it, the species living on the earth. During the time of the Neanderthals, their bodies were created in a way that allowed them to survive harsh environments and conditions that were linked to that time. One invention associated with Neanderthals is Mousterian stone tools. These were created from different stones and rocks and were used for different purposes. There rocks were used for hunting, shelter, warmth, etc. Another fascinating fact that was discovered from the fossils that have been found is the ability they had to care for each other. Certain fossils suggest significant injuries, making it impossible to survive without care. Therefore, even though care looked significantly different for these species, there is evidence to suggest cognitive understanding of pain and the need to care for others. There is also historical evidence of Neanderthal graves, linking back to emotional intelligence and an understanding of loss and distinctive behaviors associated with loss. While Neanderthals no longer exist today, there are still human beings that carry the genetics of this fascinating species, carrying on the legacy and name of Neanderthals.

Homo neanderthalensis. (2024, January 3). The Smithsonian Institution’s Human Origins Program. https://humanorigins.si.edu/evidence/human-fossils/species/homo-neanderthalensis

https://humanorigins.si.edu/evidence/human-fossils/species/homo-neanderthalensis

Homo Floresiensis

inr5043 — 2026-01-18 20:22:39 UTC

Homo Floresiensis is nicknamed the Hobbit and has only been found on the island of flores, Indonesia. They were approximately 3 feet 6 inches and had smaller brains with large teeth and no chins. They used stone tools found on the island and are thought to represent a modern human with a growth disease or disorder. They also had limited food and lacked predators as well.

Homo floresiensis | The Smithsonian Institution's Human Origins Program

Homo Floresiensis

aeh5945 — 2026-01-18 21:01:29 UTC

The Homo floresiensis was nicknamed "the hobbit" due to being about only three feet in height. This species lived in a challenging island environment, between 100,000 and 60,000 years ago, alongside predators, such as Komodo dragons and carnivorous storks; requiring advanced survival strategies. New fossil evidence, including an adult humerus dating back 700,000 years ago, suggest that Homo floresiensis evolved from a much taller ancestor, possibly Homo erectus, and became shorter due to limited island resources. In fact, due to the small size of the humerus, it was originally believed to belong to a child; however, further analysis showed adult bone structure. Due to a slightly shifted shaft, it is believed that this species had tree climbing abilities. This species was not alone in undergoing dwarfism, as remains of miniature species of extinct elephants were discovered. The brain volume of Homo floresiensis was only about one-third the volume of a typical brain today. Despite having a small brain, this species demonstrated advanced abilities in toolmaking, hunting, and avoiding predators. Stone tools found by archeologists on multiple sites of the Indonesian Island of Flores suggests Homo floresiensis had complex thinking skills allowing for them to plan and adapt to their environment.

https://www.science.org/content/article/hobbit-may-have-shrunk-early-evolved-tall-human-ancestor

Homo Denisovan

hdmiknas — 2026-01-18 22:22:33 UTC

Recent scientific discoveries have found that an archaeological fossil of a prehistoric jawbone discovered in the Penghu Channel near Taiwan belongs to a Denisovan. The Denisovan fossil belongs to a species of human relatives that are closely associated with Neanderthals. This fossil has expanded the known habitat of Homo denisovan across eastern Eurasia well beyond the fossil discoveries made in Siberia and the Tibetan Plateau. The fossil has been found to have characteristic physical features such as strong jaws and large teeth. There are also genetic materials that reveal that Denisovans had interbred with Homo sapiens and had donated genetic elements that helped the species adapt to their environment.

Article: “Denisovan jawbone helps to reveal appearance of ancient human species” - Natural History Museum
https://www.nhm.ac.uk/discover/news/2025/april/denisovan-jawbone-helps-reveal-appearance-ancient-human-species.html

Homo neanderthalensis

elm5942 — 2026-01-19 01:54:52 UTC

The skeletal system of the Neanderthal is different from modern day humans. They had larger and thicker femur and humerus bones, and they had denser overall bones compared to modern humans. This allowed them to live a more high-impact lifestyle. The muscles of the Neanderthal would crush the bones of a modern-day human, but the thicker bones of the Neanderthal prevented this. Neanderthal skeletons also had more pronounced muscle attachment sites. This allowed the muscles to have more leverage and power. https://scienceinsights.org/how-strong-were-neanderthals-compared-to-modern-humans/

Homo Neanderthalensis

arg6460 — 2026-01-19 02:01:18 UTC

Homo neanderthalensis were a species of early humans who lived across parts of Europe and Asia from about 400,000 to 40,000 years ago. They were muscular with strong brow ridges, physical traits that helped them survive in cold environments. Neanderthals were skilled hunters and toolmakers, using sophisticated stone tools and even mastering the Levallois technique to prepare tools ahead of time. This allowed for a nomadic lifestyle, while still being able to acquire necessary resources down the line. Fossils show that they lived alongside early Homo sapiens, and genetic evidence suggests that even some modern humans inherited around 2% of their DNA from Neanderthals. Although once being seen as primitive, they were intelligent and cared for others in their groups, showing complex behavior and adaptability. https://www.nhm.ac.uk/discover/who-were-the-neanderthals.html

Homo naledi

ist5048 — 2026-01-19 03:56:03 UTC

Over a decade ago the first fossils attributed to the Homo naledi were discovered from Rising Star Cave system in South Africa. They were found barely fossilized preserved in soft - mud like sediments not hard breccia. The age of the Homo naledi is still somewhat debatable, however, recent studies suggest the age remains between 335 kyr and 241 kyr. The overall bauplan is a distinctive combination of primitive and more derived features. After more than 10 years of research there is still a lot to learn about Homo naledi.

https://www.researchgate.net/profile/Paul-Pettitt-3/publication/382960805_What_we_know_and_do_not_know_after_the_first_decade_of_Homo_naledi/links/6734af9aa78ba469f060a62d/What-we-know-and-do-not-know-after-the-first-decade-of-Homo-naledi.pdf

Homo Naledi

leslieperez500 — 2026-01-21 02:52:51 UTC

Homo Naledi is a hominin species that was discovered in the Rising Star cave in South Africa. Although their brains were much smaller than the average human's, research shows that they exhibited surprisingly complex behaviors. Fossil evidence shows that they may have purposely buried their dead in places that are difficult to reach deep within the cave system. This contradicts the fact that advanced behaviors, such as caring for the dead, required a large brain size and suggests that social awareness and intentional actions may have evolved earlier than previously thought.

https://www.nationalgeographic.com/science/article/earliest-human-burial-homo-naledi-berger