Ichthyosauromorpha & Thalattosauria - Unionpedia, the concept map

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Difference between Ichthyosauromorpha and Thalattosauria

Ichthyosauromorpha vs. Thalattosauria

The Ichthyosauromorpha are an extinct clade of marine reptiles consisting of the Ichthyosauriformes and the Hupehsuchia, living during the Mesozoic. Thalattosauria (Greek for "sea lizards") is an extinct order of marine reptiles that lived in the Middle to Late Triassic.

Archosauromorpha

Archosauromorpha (Greek for "ruling lizard forms") is a clade of diapsid reptiles containing all reptiles more closely related to archosaurs (such as crocodilians and dinosaurs, including birds) rather than lepidosaurs (such as tuataras, lizards, and snakes).

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Clade

In biological phylogenetics, a clade, also known as a monophyletic group or natural group, is a grouping of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree.

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Diapsid

Diapsids ("two arches") are a clade of sauropsids, distinguished from more primitive eureptiles by the presence of two holes, known as temporal fenestrae, in each side of their skulls.

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Fibula

The fibula (fibulae or fibulas) or calf bone is a leg bone on the lateral side of the tibia, to which it is connected above and below.

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Humerus

The humerus (humeri) is a long bone in the arm that runs from the shoulder to the elbow.

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Ichthyosauria

Ichthyosauria (Ancient Greek for "fish lizard" – and) is an order of large extinct marine reptiles sometimes referred to as "ichthyosaurs", although the term is also used for wider clades in which the order resides.

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Marine reptile

Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment.

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Radius (bone)

The radius or radial bone (radii or radiuses) is one of the two large bones of the forearm, the other being the ulna.

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Sauropterygia

Sauropterygia ("lizard flippers") is an extinct taxon of diverse, aquatic reptiles that developed from terrestrial ancestors soon after the end-Permian extinction and flourished during the Triassic before all except for the Plesiosauria became extinct at the end of that period.

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Triassic

The Triassic (sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago (Mya), to the beginning of the Jurassic Period 201.4 Mya.

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