Mammals evolved from therapsid reptiles in th | vedclass

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(C) Mammals evolved from a group of reptiles known as therapsids.Therapsids belong to the lineage of synapsids.$A$ synapsid skull is characterized by

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Synapsid skull

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(C) Mammals evolved from a group of reptiles known as therapsids.Therapsids belong to the lineage of synapsids.$A$ synapsid skull is characterized by the presence of a single temporal opening (fenestra) on each side of the skull,located behind the eye socket (orbit).This single opening is bounded below by the zygomatic arch,which is formed by the jugal and squamosal bones.Therefore,the correct answer is $Synapsid$ $skull$.

Mammals evolved from therapsid reptiles in the $Triassic$ period. The type of skull in these reptiles is

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