Dated to 306 million years ago, "Archaeothyris", along with a more poorly known synapsid called "Echinerpeton", are the oldest undisputed synapsids known.
It lived in the late Carboniferous period, 306 million years ago.
It lived in the late Carboniferous period, 306 million years ago.
Verwenden Sie einfachere Formulierungen: Dated to 306 million years ago, "Archaeothyris", along with a more poorly known synapsid called "Echinerpeton", are the oldest undisputed synapsids known. Ausgabe: