单词	Endoceras
释义	Endoceras noun En·​doc·​er·​as enˈdäsərəs : a genus (the type of the family Endoceratidae) of Ordovician and Silurian nautiloid cephalopods with a straight shell having a very large siphuncle and endocones and reaching a length of 12 feet endoceratid ¦endō¦serətə̇d adjective or noun Word History Etymology New Latin, from end- + -ceras
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