# data[].attributes.body
he skull of Sphenosuchus was much smaller relative to the rest of the body. The jawline was deeper and ventrally convex with a premaxilla/maxilla kink. The antorbital fenestra was deeper than a slit. The squamosal shelf was downturned posteriorly. Anterior to the vomers the maxillae produce a medial shelf that includes a new premaxillary fenestration at the suture.

The neural spines were taller. The coracoid is stem-shaped, not disc-shaped as in more primitive taxa. Whereas in Cosesaurus the coracoid became stem-like at the onset of bipedalism, here it occurs at the return to quadrupedalism. The coracoid still slides. It is not socketed, as in fenestrasaurs/pterosaurs and birds.

The pubis is extremely elongated. The femur and tibia were similar in length to the humerus.

# data[].attributes.body
Thalattosaurs have moderate adaptations to marine lifestyles, including long, paddle-like tails and slender bodies with more than 20 dorsal vertebrae. There are few unique traits of the postcranial skeleton shared by all thalattosaurs, but the skeleton is still useful for distinguishing between askeptosauroids and thalattosauroids. Askeptosauroids are characterized by elongated necks with short neural spines and at least 11 vertebrae, while thalattosauroids have shorter necks sometimes involving as few as four vertebrae. Thalattosauroids also have tall neural spines on their neck, back, and especially the tail vertebrae, increasing the surface area for swimming via lateral undulation. Thalattosauroids additionally possess short, wide limb bones poorly adapted for movement on land. In this superfamily, the humerus is widest near the shoulder, the femur is widest near the knee, the radius is reniform ("kidney-shaped"), and phalanges are long and plate-like. Askeptosauroids retain hourglass-shaped limb bones like land reptiles, but even they share specializations with thalattosauroids such as a short tibia and fibula, with the latter expanding near the ankle.

# data[].attributes.body
Notosuchians were generally small, with slender bodies and erect limbs. The most distinctive characteristics are usually seen in the skull. Notosuchian skulls are generally short and deep. While most are relatively narrow, some are very broad. Simosuchus has a broadened skull and jaw that resembles a pug, while Anatosuchus has a broad, flat snout like that of a duck.

The teeth vary greatly between different genera. Many have heterodont dentitions that vary in shape across the jaw. Often, there are large canine-like teeth protruding from the front of the mouth and broader molar-like teeth in the back. Some genera, such as Yacarerani and Pakasuchus, have extremely mammal-like teeth. Their molars are complex and multicuspid, and are able to occlude or fit with one another. Some forms such as Malawisuchus had jaw joints that enabled them to move the jaw back and forth in a shearing motion rather than just up and down.

A derived group of notosuchians, the baurusuchids differ considerably from other forms. They are very large in comparison to other notosuchians and are exclusively carnivorous. Baurusuchids have deep skulls and prominent canine-like teeth.

# data[].attributes.body
an extinct genus of goniopholidid crocodyliform that lived in Europe and Africa during the Late Jurassic and Early Cretaceous.[1][2] Being semi-aquatic it is very similar to modern crocodiles. It ranged from 2–4 metres in length, and would have had a very similar lifestyle to the American alligator or Nile crocodile.

# data[].attributes.body
an extinct genus of eusuchian crocodylomorph. It is known only from a partial skull recovered from Barremian-age rocks of the Lower Cretaceous Vectis Formation (Wealden Group) of the Isle of Wight. This skull, BMNH R 177, is short and wide, with a eusuchian-like palate and inferred enlarged posterior teeth that would have been suitable for crushing

# data[].attributes.body
Large, solidly built, lizard-like reptiles, crocodilians have long flattened snouts, laterally compressed tails, and eyes, ears, and nostrils at the top of the head. They swim well and can move on land in a "high walk" and a "low walk", while smaller species are even capable of galloping. Their skin is thick and covered in non-overlapping scales. They have conical, peg-like teeth and a powerful bite. They have a four-chambered heart and, somewhat like birds, a unidirectional looping system of airflow within the lungs, but like other living non-avian reptiles they are ectotherms.

Crocodilians are found mainly in lowlands in the tropics, but alligators also live in the southeastern United States and the Yangtze River in China. They are largely carnivorous, the various species feeding on animals such as fish, crustaceans, molluscs, birds, and mammals; some species like the Indian gharial are specialised feeders, while others like the saltwater crocodile have generalised diets. Crocodilians are typically solitary and territorial, though cooperative feeding does occur. During breeding, dominant males try to monopolise available females. Females lay eggs in holes or in mounds and, unlike most other non-avian reptiles, care for their hatched young.

# data[].attributes.body
V- variation - Mutation
I- inheritance - Sexual selection
S- selection - Natural selection
T- time - Genetic Drift

# data[].attributes.body
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype.

# data[].attributes.body
Small errors in DNA code during cellular reproduction. Beneficial or harmful.

# data[].attributes.body
Passing of genetic information, influenced by male competition and female choice.

# data[].attributes.body
Bottle neck effect - Lucky v.s. unlucky
Founder effect- found

# data[].attributes.body
reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities.

# data[].attributes.body
the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population.

# data[].attributes.body
Same structures in organisms possibly having a common ancestor.

# data[].attributes.body
Its there for something but not used the same as it once was or isn't needed. (A vestigial structure that an alligator has are small horns behind their eyes)

# data[].attributes.body
an organism repeats it's evolutionary history during embryonic development.

# data[].attributes.body
Molecular evolution is the process of change in the sequence composition of cellular molecules such as DNA, RNA, and proteins across generations. ( humans are closer to chimps than a zebra and a horse are)