594:
139:
126:
371:
have been found in
Antarctica, Australia, Austria, Belgium, Brazil, Canada (British Columbia), Chile, Denmark, France, Germany, Haiti, India, Iran, Japan, Mexico, the Netherlands, New Zealand, Nigeria, Oman, Romania, the Russian Federation, Poland, Saudi Arabia, South Africa, Spain, Turkey, Ukraine,
301:
is compressed and high-whorled, with an oval or flat sided section. Ribs tend to be differentiated into short umbilical and separate ventro-lateral sets, with a smooth area between. Some
348:
734:
543:
724:
674:
635:
719:
679:
530:
336:
372:
the United Arab
Emirates, and the United States (Alaska, Arkansas, California, Delaware, Mississippi, New Jersey, Oregon, Texas, Washington).
443:
400:
461:
Kennedy, W. J. (1986). Campanian and
Maastrichtian Ammonites from Northern Aquitaine, France (No. 36). Palaeontological association. page 30
754:
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689:
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340:
239:
569:
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446:, Part L, Ammonoidea. R.C. Moore, ed. Geological Soc. of America and Univ. Kansas press. p L377-L380.
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63:
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113:
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305:
specimens of this genus reached 40 cm (16 in) in diameter.
160:
45:
464:
456:
Cephalopods
Present and Past: New Insights and Fresh Perspectives
468:
327:
in which ribs disappear early, leaving an almost smooth shell.
458:
by Neil H. Landman, Richard Arnold Davis, and Royal H. Mapes
609:
477:
294:. Altogether some 28 species have been described.
389:Charles A. Repenning, Richard H. Tedford (2013).
629:
8:
735:Late Cretaceous ammonites of North America
636:
622:
465:
124:
31:
395:. Indiana University Press. p. 183.
337:International Commission on Stratigraphy
381:
444:Treatise on Invertebrate Paleontology
359:, 72.1 ± 0.2 million years ago.
7:
590:
588:
725:Late Cretaceous ammonites of Europe
282:with a worldwide distribution, and
608:. You can help Knowledge (XXG) by
25:
675:Campanian genus first appearances
592:
392:Fossils of the Carpathian Region
137:
720:Cretaceous animals of Australia
680:Maastrichtian genus extinctions
319:in which the ribs persist, and
286:for the desmoceratacean family
1:
331:Biostratigraphic significance
290:. The genus' type species is
450:A Pictorial Guide to Fossils
509:Pachydiscus (Pachydiscidae)
796:
755:Ammonites of South America
587:
349:defining biological marker
27:Genus of molluscs (fossil)
254:
247:
134:Scientific classification
132:
123:
34:
750:Cretaceous United States
311:includes two subgenera,
18:Pachydiscus ootacodensis
775:Ammonites of Antarctica
345:Pachydiscus neubergicus
339:(ICS) has assigned the
270:is an extinct genus of
54:Upper Cretaceous–Danian
715:Ammonites of Australia
604:-related article is a
341:First Appearance Datum
570:Paleobiology Database
351:for the start of the
770:Cretaceous Caribbean
685:Cretaceous ammonites
452:by Gerard Ramon Case
695:Ammonites of Africa
353:Maastrichtian Stage
670:Maastrichtian life
321:P. (Neodesmoceras)
760:Cretaceous Brazil
745:Cretaceous Mexico
740:Cretaceous Canada
730:Cretaceous Europe
705:Ammonites of Asia
700:Cretaceous Africa
660:Ammonitida genera
617:
616:
585:
584:
557:Open Tree of Life
471:Taxon identifiers
402:978-0-253-00987-6
263:
262:
243:
16:(Redirected from
787:
780:Ammonitina stubs
765:Cretaceous Chile
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313:P. (Pachysiscus)
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55:
40:Temporal range:
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21:
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710:Cretaceous Asia
655:Desmoceratoidea
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438:Further reading
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280:Early Paleocene
276:Late Cretaceous
257:Parapachydiscus
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53:
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42:Late Cretaceous
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28:
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15:
12:
11:
5:
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665:Campanian life
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292:P. neubergicus
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690:Index fossils
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370:
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350:
346:
342:
338:
330:
328:
326:
325:Maastrichtian
322:
318:
314:
310:
306:
304:
300:
297:The shell of
295:
293:
289:
288:Pachydiscidae
285:
281:
277:
273:
269:
268:
259:
258:
253:
250:
246:
241:
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235:
228:
225:
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220:Pachydiscidae
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50:
47:
43:
37:
33:
30:
19:
610:expanding it
599:
478:
455:
449:
422:
417:
406:. Retrieved
391:
384:
368:
366:
363:Distribution
344:
334:
320:
312:
308:
307:
298:
296:
291:
266:
265:
264:
256:
255:
233:
232:
35:
29:
503:Wikispecies
479:Pachydiscus
428:Fossilworks
423:Pachydiscus
369:Pachydiscus
367:Fossils of
309:Pachydiscus
299:Pachydiscus
267:Pachydiscus
234:Pachydiscus
181:Cephalopoda
36:Pachydiscus
649:Categories
602:Ammonitina
408:2022-08-23
376:References
357:Cretaceous
207:Ammonitida
194:Ammonoidea
187:Subclass:
323:from the
317:Campanian
315:from the
303:Hungarian
274:from the
157:Kingdom:
151:Eukaryota
49:Paleocene
494:Q1638263
488:Wikidata
272:ammonite
249:Synonyms
213:Family:
171:Mollusca
167:Phylum:
161:Animalia
147:Domain:
562:4955974
549:1262075
536:3245931
355:of the
347:as the
226:Genus:
200:Order:
177:Class:
399:
242:, 1884
240:Zittel
600:This
575:15309
544:IRMNG
46:Early
606:stub
531:GBIF
523:6BSP
430:.org
397:ISBN
335:The
284:type
278:and
59:PreꞒ
518:CoL
426:at
343:of
651::
572::
559::
546::
533::
520::
505::
490::
109:Pg
51:,
637:e
630:t
623:v
612:.
411:.
230:†
217:†
204:†
191:†
114:N
104:K
99:J
94:T
89:P
84:C
79:D
74:S
69:O
64:Ꞓ
44:-
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
