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List of prehistoric brittle stars; List of prehistoric bryozoan genera; List of prehistoric chitons; List of prehistoric foraminifera genera; List of ichthyosaur genera; List of marine gastropod genera in the fossil record; List of plesiosaur genera; List of prehistoric malacostracans; List of prehistoric medusozoan genera; List of prehistoric ...
Maiasaura (from the Greek μαῖα, meaning "midwife" and σαύρα, the feminine form of saurus, meaning "reptile") is a large herbivorous saurolophine hadrosaurid ("duck-billed") dinosaur genus that lived in the area currently covered by the state of Montana and the Canadian province of Alberta.
Metridiochoerus was a large animal, 1.5 metres (4.9 ft) in length, resembling a giant warthog. It had two large pairs of tusks which were pointed sideways and curved upwards. [ 4 ] The teeth, especially the third molars, become increasingly high crowned ( hypsodont ) in later species.
Together, the fossil pieces tell the story of a creature that defied all expectations based on the evolutionary paths of better-known animals from the time, which mostly lived closer to the equator.
A marsupial lion skeleton in the Naracoorte Caves, South Australia. The term Australian megafauna refers to the megafauna in Australia [1] during the Pleistocene Epoch.Most of these species became extinct during the latter half of the Pleistocene, and the roles of human and climatic factors in their extinction are contested.
The Ordovician cystoid Echinosphaerites (an extinct echinoderm of the Class Rhombifera) from northeastern Estonia; encrusted by a graptolite (black branches).. The taxonomy of commonly fossilized invertebrates combines both traditional and modern paleozoological terminology.
Puma pardoides is an extinct prehistoric cat in the genus Puma known ... Fossils of this leopard-sized animal are around 2 million years old and were found in France ...
Size comparison of some species of Edaphosaurus.. Edaphosaurus species measured from 0.5 to 3.5 metres (1.6 to 11.5 ft) in length and weighed over 300 kg (660 lb). [5] In keeping with its tiny head, the cervical vertebrae are reduced in length, while the dorsal vertebrae are massive, the tail is deep, the limbs are short and robust, and the ribs form a wide ribcage.