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is small, slender, compressed, with prominent annuli (complete encircling ribs or costae); may be straight or slightly endogastric. Could be said to be an annulate
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Rousseau H Flower, 1964. The
Nautiloid Order Ellesmeroceratida (Cephalopoda), Memori 12. State Bureau of Mines and Mineral Resourecues. Socorro, New Mexico
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310:but its sources remain unclear because it lacks
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341:Learn how and when to remove this message
252:according to Rousseau Flower in 1964.
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539:Paleozoic life of British Columbia
477:. You can help Knowledge (XXG) by
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524:Prehistoric nautiloid genera
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534:Paleozoic life of Alberta
367:List of cephalopod genera
220:Ulrich & Foerste 1936
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362:Fossilworks 16 Oct 2014.
296:This article includes a
325:more precise citations.
473:-related article is a
271:has been found in the
111:Walcottoceras monsense
436:Paleobiology Database
365:Jack Sepkoski, 2000.
250:Protocycloceratidae
201:Protocycloceratidae
298:list of references
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323:introducing
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165:Cephalopoda
518:Categories
279:References
171:Subclass:
471:nautiloid
401:Q18394346
240:from the
141:Kingdom:
135:Eukaryota
395:Wikidata
194:Family:
155:Mollusca
151:Phylum:
145:Animalia
131:Domain:
428:1099131
415:4625743
319:improve
248:family
207:Genus:
181:Order:
161:Class:
441:12429
423:IRMNG
304:, or
234:genus
232:is a
475:stub
410:GBIF
36:Preκ
236:of
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86:Pg
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211:β
198:β
185:β
91:N
81:K
76:J
71:T
66:P
61:C
56:D
51:S
46:O
41:κ
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