出典:Wikipedia
出典:『Wikipedia』 (2011/05/12 13:45 UTC 版)
Megacheira ("Great Hands") is an extinct class of predatory euarthropods that possessed a pair of short enlarged appendages (the source of the class' name). They were found in marine environments throughout the world from the lower to middle Cambrian, and were important components of several faunas, including the Burgess and Maotianshan Shales lagerstattens. Genera referred to the class include Leanchoilia, Alalcomenaeus and Yohoia, Fortiforceps and Jianfengia.