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290:. They comprise medium-size to large or gigantic genera which in general are strongly ribbed, tuberculate in some, with keeled or grooved and keeled venters, and well differentiated ammonitic sutures. The aptycus is single valved with a shiny, concentrically striated surface.
420:
407:
338:
Donvan, D.T. and
Callomon, J.H. 1981, Classification of the Jurassic Ammonitina., in The Ammonoidea, The Systematics Association Special Volume 18.
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334:. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
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is a family of true ammonites that make up part of the superfamily
345:
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330:Arkell, W.J.; Kummel, B.; Wright, C.W. (1957).
301:ammonites, worldwide, extending into the lower
308:The Arietitidae may have their origin in the
8:
342:
104:
20:
316:, and is the probably source for the
7:
14:
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1:
284:, named after the type genus
490:Sinemurian first appearances
16:Extinct family of ammonites
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495:Early Jurassic extinctions
312:if not directly from the
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123:Scientific classification
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34:Sinemurian–Pliensbachian
293:Arietitidae dominated
447:Paleobiology Database
115:Asteroceras stellare
480:Ammonitida families
332:Mesozoic Ammonoidea
268:Hypasteroceratinae
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434:Open Tree of Life
348:Taxon identifiers
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318:Oxynoticeratidae
258:Pseudotropitinae
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27:Temporal range:
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485:Psiloceratoidea
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310:Schlotheimiidae
282:Psiloceratoidea
263:Asteroceratinae
253:Agassiceratinae
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209:Psiloceratoidea
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314:Psiloceratidae
295:Lower Jurassic
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29:Lower Jurassic
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303:Pliensbachian
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235:Subfamilies
221:
113:
18:
475:Arietitidae
386:Arietitidae
380:Wikispecies
356:Arietitidae
278:Arietitidae
248:Arietitinae
243:Alsatitinae
222:Arietitidae
170:Cephalopoda
24:Arietitidae
469:Categories
324:References
299:Sinemurian
196:Ammonitida
183:Ammonoidea
176:Subclass:
287:Arietites
146:Kingdom:
140:Eukaryota
371:Q4790516
365:Wikidata
215:Family:
160:Mollusca
156:Phylum:
150:Animalia
136:Domain:
439:4955143
413:3245785
189:Order:
166:Class:
452:204843
426:100823
229:, 1874
421:IRMNG
227:Hyatt
408:GBIF
39:PreꞒ
400:6Q5
395:CoL
471::
449::
436::
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410::
397::
382::
367::
320:.
305:.
297:,
89:Pg
31:,
219:†
206:†
193:†
180:†
94:N
84:K
79:J
74:T
69:P
64:C
59:D
54:S
49:O
44:Ꞓ
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