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Haploceratoidea are typically compressed, discoidal
Ammontida that may be keeled or unkeeled, tending to be oxyconic, with usually falcoid or falcate ribbing. The
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272:. Strigoceratidae is limited to the Bajocian but Oppeliidae, and Haploceratidae extend through the remaining Jurassic, well into the
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The Origin of the
Haploceratoidea is undetermined but it is likely all three component families have their beginnings in the
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in the middle
Bajocian. None of the Haploceratoidea is thought to have given rise to any subsequent group.
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689:, Part L Ammonoidea, (L171), Geological Society of America and University of Kansas press, 1964.
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Please help update this article to reflect recent events or newly available information.
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are paired and differ between families and have been found
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Haploceratoidea begins with all three families in the lower
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687:Treatise on Invertebrate Paleontology
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276:; the Oppeliidae into the middle
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241:, is an extinct superfamily of
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245:cephalopods belonging to the
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249:that unites three families,
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112:Scientific classification
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854:Ammonitida superfamilies
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793:-related article is a
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309:Pseudolissoceras
261:, listed below.
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38:Temporal range:
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637:Quenstedt, 1886
601:Strigoceratidae
533:Bornhardticeras
504:Bonarelli, 1894
473:Bonarelli, 1893
450:Sanmartinoceras
397:Bonarelli, 1894
329:Haploceratoidea
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266:Middle Jurassic
251:Strigoceratidae
239:Haplocerataceae
235:Haploceratoidea
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523:Streblitinae
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484:Parent, 2019
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327:Superfamily
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731:Wikispecies
633:Strigoceras
626:Hyatt, 1900
587:Naramoceras
559:Spath, 1925
548:Hyatt, 1900
526:Spath, 1925
495:Spath, 1928
462:Spath, 1925
417:Hyatt, 1903
386:Spath, 1923
364:Hyatt, 1900
360:Glochiceras
353:Bayle, 1879
282:Valanginian
237:, formerly
159:Cephalopoda
849:Ammonitina
838:Categories
791:Ammonitina
645:References
576:Subfamily
521:Subfamily
501:Oppeliinae
499:Subfamily
490:Subfamily
457:Subfamily
424:Gyaloceras
413:Aconeceras
401:Subfamily
394:Oppeliidae
371:Haploceras
349:Lissoceras
274:Cretaceous
255:Oppeliidae
247:Ammonitida
198:Ammonitina
191:Suborder:
185:Ammonitida
172:Ammonoidea
165:Subclass:
674:June 2015
566:Uhligites
439:Riccardi
435:Koloceras
288:Diagnosis
227:see text
221:Families
135:Kingdom:
129:Eukaryota
745:BioLib:
722:Q5651661
716:Wikidata
316:Taxonomy
300:in e.g.
270:Bajocian
243:ammonoid
149:Mollusca
145:Phylum:
139:Animalia
125:Domain:
664:updated
605:Buckman
599:Family
392:Family
337:Family
306:and in
298:in situ
294:aptychi
178:Order:
155:Class:
761:130831
748:134068
630:Genus
619:Genus
611:Genus
607:, 1924
584:Genus
563:Genus
552:Genus
541:Genus
530:Genus
508:Genus
477:Genus
466:Genus
447:Genus
443:, 1987
441:et al.
432:Genus
421:Genus
410:Genus
379:Genus
368:Genus
357:Genus
346:Genus
278:Albian
257:, and
789:This
795:stub
46:PreꞒ
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268:,
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96:Pg
826:e
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672:(
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208:†
195:†
182:†
169:†
101:N
91:K
86:J
81:T
76:P
71:C
66:D
61:S
56:O
51:Ꞓ
20:)
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