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Sauropsida (Greek for "lizard faces") is a clade of amniotes, broadly equivalent to the class Reptilia, though typically used in a broader sense to also include extinct stem-group relatives of modern reptiles and birds (which, as theropod dinosaurs, are nested within reptiles as more closely related to crocodilians than to lizards or turtles). [2]
Sauropoda (/ s ɔː ˈ r ɒ p ə d ə /), whose members are known as sauropods (/ ˈ s ɔːr ə p ɒ d z /; [1] [2] from sauro-+ -pod, 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs.
113–100.5 Ma Early Cretaceous: late Albian [20] United Kingdom: Gigantosaurus megalonyx Seeley, 1869 Nomen dubium [4] Seeley: 1869 Sauropoda [21] 154.8–149.2 Ma Late Jurassic: Kimmeridgian [21] United Kingdom: A chimera of sauropod and non-sauropod specimens Ornithopsis hulkei Seeley, 1870: Valid [8] Seeley: 1870 Titanosauriformes [8] 125. ...
Sauropsids are a group of land vertebrates which includes all existing reptiles and birds and their fossil ancestors. They are one of the two groups which evolved from egg-laying amniotes in the first part of the Carboniferous period. [1][2][3] The synapsids are the other group which evolved from amniotes.
Sep 1, 2023 · Analyses of this burgeoning fossil record reveal where and when these dinosaurs became giants, and the factors that allowed them to evolve extreme sizes again and again over the course of their...
Sauropodomorpha (/ ˌsɔːrəˌpɒdəˈmɔːrfə / [2] SOR-ə-POD-ə-MOR-fə; from Greek, meaning "lizard-footed forms") is an extinct clade of long-necked, herbivorous, saurischian dinosaurs that includes the sauropods and their ancestral relatives.
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Sauropoda. Marsh, 1878. Sauropoda are an infraorder of saurischian ("lizard-hipped") dinosaurs. They had very long necks, long tails, small heads (in comparison to the rest of their body), and thick, pillar-like legs and peg-like teeth. They are notable for the enormous size of some species.
