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・ Argonauta hians
・ Argonauta itoigawai
・ Argonauta joanneus
・ Argonauta nodosa
・ Argonauta nouryi
・ Argonauta oweri
・ Argonauta pacifica
・ Argonauta sismondai
・ Argonauta tokunagai
・ Argonaute
・ Argonaute-class ship of the line
・ Argonaute-class submarine
・ Argonautica
・ Argonautica (disambiguation)
・ Argonautica Orphica
Argonauticeras
・ Argonautidae
・ Argonautoida
・ Argonautoidea
・ Argonauts
・ Argonauts Club
・ Argonauts F.C.
・ Argonauts of Saint Nicholas
・ Argonauts of the Western Pacific
・ Argonay
・ Argoncilhe
・ Argonectes
・ Argonemertes
・ Argonemertes hillii
・ Argonemertes stocki


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Argonauticeras : ウィキペディア英語版
Argonauticeras

|regnum = Animalia
|phylum = Mollusca
|classis = Cephalopoda
|subclassis = Ammonoidea
|ordo = Lytoceratida
|familia = Lytoceratidae
|genus = ''Argonauticeras''
|genus_authority = Anderson 1938 }}
''Argonauticeras'' is an extinct ammonoid cephalopod genus that lived during the latter part of the Early Cretaceous, included in the Lytoceratida and found in lower and possibly middle Aptian marine sediments. It has been thought of as a subgenus of ''Ammonoceratites''.
''Argonauticeras'' produced an evolute shell with a trapezoidal whorl section, slightly impressed inner rim (or dorsum), a some what flattened outer rim (venter) and broadly arched sides, covered with fine, weakly crinkled ribs.
==References==

*W.J Arkell, et al. 1957. Systematic Descriptions, Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology Part L Ammonoidea.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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