10 relations: Anisian, Ladinian, Lariosaurus, List of examples of convergent evolution, List of marine reptiles, Macroplacus, Paraplacodus, Placodont, Placodontiformes, Psephoderma.
Anisian
In the geologic timescale, the Anisian is the lower stage or earliest age of the Middle Triassic series or epoch and lasted from million years ago until million years ago.
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Ladinian
The Ladinian is a stage and age in the Middle Triassic series or epoch.
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Lariosaurus
Lariosaurus is an extinct genus of nothosaurid from the Middle Triassic (late Anisian to late Ladinian stage) of central and western Europe and China.
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List of examples of convergent evolution
Convergent evolution — the repeated evolution of similar traits in multiple lineages which all ancestrally lack the trait — is rife in nature, as illustrated by the examples below.
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List of marine reptiles
Following is a list of marine reptiles, reptiles which are adapted to life in a marine environment.
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Macroplacus
Macroplacus is an extinct genus of placodont reptiles.
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Paraplacodus
Paraplacodus broilli is an extinct placodont sauropterygian from the middle Triassic period, from the Anisian until Ladinian stages.
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Placodont
Placodonts ("Tablet teeth") is an extinct order of marine reptiles that lived during the Triassic period, becoming extinct at the end of the period.
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Placodontiformes
Placodontiformes is a clade of sauropterygian marine reptiles that includes placodonts and the non-placodont Palatodonta.
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Psephoderma
Psephoderma (meaning "pebbly skin", from the Ancient Greek psepho (ψῆφος), "pebbly", and derma (δέρμα), "skin" is a genus of placodont that was very similar to its relatives Placochelys and Cyamodus. Psephoderma had a flattened skull and a narrow, straight rostrum. Inside this skull, embedded in the jaws, were rounded teeth specialized for crushing the shellfish it ate. Unlike most placodonts, Psephoderma had a carapace that was divided into two pieces, one on the shoulders and back, another on the rear end. Psephoderma grew to 180 cm long and lived in the Late Triassic (Norian), about 210 million years ago. It was one of the last placodonts to live.
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