https://padlet.com/k22009222/hl54x1icq8s5qpga en-us 2023-02-01 15:17:37 UTC 2025-12-26 21:34:04 UTC hello@padlet.com https://padlet.net/icons/png/1f9b4.png k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2505173879 2023-03-06 13:47:39 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2505173879 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2505174368 2023-03-06 13:47:57 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2505174368 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2505189207 2023-03-06 13:56:57 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2505189207 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511918228 2023-03-10 14:30:33 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511918228 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511920433 Past early experimental phase, forms a cylindrical body (centrum) with various bony processes attached to it forming passage for spinal cord (neural arch)]]> 2023-03-10 14:32:04 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511920433 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511944361 2023-03-10 14:49:09 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511944361 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511944929 2023-03-10 14:49:36 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511944929 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511953884 Since 200 million years ago, Alligatoridae and Crocodylidae, have occupied aquatic habitats and thrived even beyond the death of the dinosaurs by the asteroid.

]]> 2023-03-10 14:55:19 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511953884 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511957831 Having once roamed the earth in the same time period as dinosaurs they share many common features and traits: scaly bodies, sharp teeth and claws, cold blood and both being reptiles.]]> 2023-03-10 14:58:07 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511957831 yanxuchen3 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511961233 edited from youtube]]> 2023-03-10 15:00:45 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511961233 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511963030 2023-03-10 15:02:00 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511963030 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511965036 2023-03-10 15:03:34 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511965036 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511967149 2023-03-10 15:05:17 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511967149 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511975572 Contrary to popular belief, early dinosaurs were more similar to birds mammals in terms of locomotion. It was thought that during evolution the leg posture had become more crouched and less upright and had become a more knee-driven mechanism mainly used for running and walking. However evidence supported a more erect posture which restricted most limb movements to a parallel plane to the body (parasagittal gait posture)]]> 2023-03-10 15:11:51 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511975572 yanxuchen3 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511985356 The medullary bone in the femur (only in females) is used to draw calcium to create eggshells for them to lay eggs from which their offspring will hatch. It is predicted that females are pregnant for 3-6 months before they lay their eggs, laying up to 20 eggs at a time depending on the mother's size.]]> 2023-03-10 15:19:27 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511985356 yanxuchen3 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511996359 As reproductive organs are composed of soft tissues, they do not form fossils, so knowledge of the dinosaur's reproductive organs comes from their closest living relatives -- crocodiles. The cloaca is a single organ for sex and excretion in females and males; the penis emerges from the cloaca to deliver sperm (only in males).]]> 2023-03-10 15:27:59 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2511996359 k22009123 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512022402 Dinosaur brains do not fossilate, however the structure of skull gives us an idea of where the nerves and blood vessels flowed. The jaw area of a dinosaur has a high concentration of nerves likely used to sense preys. By our understanding of crocodile and reptile anatomy, we can also assume that dinosaurs were sensitive to movements in it’s surroundings.]]> 2023-03-10 15:49:10 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512022402 k22009123 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512022857 It also consists of an anterior region, the prezygapophyses and a posterior region, the postzygapophyses, which acts like hands for support. Some fossils even suggests that dinosaurs may have extra vertebral stuctures for additional support, feeding and sensory mechanism, however the evidence for these are limited. ]]> 2023-03-10 15:49:33 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512022857 yanxuchen3 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512024258 2023-03-10 15:50:38 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512024258 yanxuchen3 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512624874 Cardiovascular function in dinosaurs was inferred from fossil evidence, showing high arterial blood pressure, a large four-chambered heart, a high aerobic metabolic rate, and intense locomotion.]]> 2023-03-11 11:21:18 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512624874 yanxuchen3 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512625642 Endotherms have higher mean arterial pressure, thicker cardiac muscle, and larger hearts due to high metabolic rate and Laplace's principle that left ventricular wall thickness is proportional to the pressure exerted and chamber radius.]]> 2023-03-11 11:23:53 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2512625642 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2514657376 2023-03-13 15:48:28 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2514657376 k22009222 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2514663225 2023-03-13 15:51:54 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2514663225 k22009123 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519970638 Unlike their herbivore counterparts, carnivorous dinosaurs have relatively smaller guts as it is sufficient to process the food they ate. Almost all carnivore’s digestive systems are in front of the pubis bones, allowing the dinosaur to move swiftly when chasing it’s prey.]]> 2023-03-16 20:31:13 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519970638 k22009123 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519980387 The two-footed ornithopods had a stomach at the back of it’s body to bring the centre of gravity closer to the hips, allowing it to move on it’s hind legs]]> 2023-03-16 20:43:09 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519980387 k22009123 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519984084 The four-legged sauropods had a gut much larger than that of carnivorous dinosaurs to digest the tough fibres in plants it ate. A sauropod’s teeth are in the wrong shape to chew up plants, which is why also they also had a gizzard, where it stored it’s stomach stones that are used to ground up food before being passed to the stomach.]]> 2023-03-16 20:47:50 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519984084 k22009123 https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519986760 2023-03-16 20:51:17 UTC https://padlet.com/k22009222/hl54x1icq8s5qpga/wish/2519986760