Family Megachasmidae Taylor, Compagno & Struhsaker 1983

Megouridae “Randall et al.” [Ellis & McCosker] 1980 (family) “ Megoura ” [a prank article, not available; family name sometimes seen as Megourididae]

Megachasmidae Taylor, Compagno & Struhsaker 1983:89 [ref. 5428] (family) Megachasma