令人悲伤 发表于 2025-3-27 00:57:27
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The Position of the Ammonoidea within the Cephalopodare more closely related to the Coleoidea than to the other ectocochleate cephalopods, i.e., the Nautiloidea (Jacobs and Landman, 1994). There also can be no serious doubts that the Ammonoidea were derived from bactritids (Jacobs and Landman, 1994). However, it is still worth the effort to state moreDignant 发表于 2025-3-27 19:51:43
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