Andrew Schwartz on Instagram: "The FIRST large herbivorous vertebrate on land was a “reptile” named Edaphosaurus. But why “reptile”? Despite the look and name, Edaphosaurus was not closely related to reptiles. Rather it was actually a very VERY early cousin of mammals like you and me. In the past, we’d call it a “mammal-like reptile”. Today the more accurate term is “synapsid”, “proto-mammal”, or “stem-mammal”. Edaphosaurus first appeared around 303 mya during the late Carboniferous and persiste

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