"The pelycosaurs (from Greek \u03C0\u03AD\u03BB\u03C5\u03BE pelyx \"bowl\" or \"axe\" and \u03C3\u03B1\u1FE6\u03C1\u03BF\u03C2 sauros \"lizard\") are an informal grouping (previously considered an order) composed of basal or primitive Late Paleozoic synapsid amniotes. Some species were quite large and could grow up to 3 metres (10 ft) or more, although most species were much smaller."@en . . . .