Category:Middle Triassic first appearances

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This category includes biological taxa of rank more inclusive than genus that evolved during the Middle Triassic epoch of geologic time, between 247.2 and 237 million years ago, as well as genera and species that evolved during this time and persisted across multiple geological epochs.

See also the preceding Category:Early Triassic first appearances and the succeeding Category:Late Triassic first appearances
See also: Category:Middle Triassic extinctions

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