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276:, Germany. It was once estimated that, if complete, this specimen would have had a diameter of approximately 2.55 m (8.4 ft) or even 3.5 m (11 ft). However, a study in 2021 estimated the diameter of the largest specimens to be around 2 m (6.6 ft). The total live mass has been estimated at 1,455 kg (3,208 lb), of which the shell would constitute 705 kg (1,554 lb).
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Payne, J.L., A.G. Boyer, J.H. Brown, S. Finnegan, M. Kowalewski, R.A. Krause, Jr., S.K. Lyons, C.R. McClain, D.W. McShea, P.M. Novack-Gottshall, F.A. Smith, J.A. Stempien & S.C. Wang 2009. Two-phase increase in the maximum size of life over 3.5 billion years reflects biological innovation and
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401:"Ontogeny, evolution and palaeogeographic distribution of the world's largest ammonite Parapuzosia (P.) seppenradensis (Landois, 1895)"
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Ifrim, Christina; Stinnesbeck, Wolfgang; González, Arturo H. González; Schorndorf, Nils; Gale, Andrew S. (2021-11-10).
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Jahresbericht des Westfälischen
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461:Parapuzosia (Parapuzosia) seppenradensis
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465:Geologie und Paläontologie in Westfalen
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384:Breviora Museum of Comparative Zoology
270:Westphalian Museum of Natural History
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459:Kennedy, W.J. & U. Kaplan 1995.
349:Die Riesenammoniten von Seppenrade,
378:Teichert, C. & B. Kummel 1960.
579:. You can help Knowledge (XXG) by
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233:is the largest known species of
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380:Size of endoceroid cephalopods
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631:Fossil taxa described in 1895
418:10.1371/journal.pone.0258510
237:. It lived during the Lower
321:environmental opportunity.
16:Extinct species of ammonite
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488:Parapuzosia seppenradensis
209:Pachydiscus seppenradensis
183:Parapuzosia seppenradensis
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48:Scientific classification
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334:10.1073/pnas.0806314106
253:. A specimen, found in
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162:P. seppenradensis
29:Temporal range: Lower
538:Paleobiology Database
626:Cretaceous ammonites
294:Paleontology portal
347:Landois, H. 1895.
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351:Pachydiscus
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228:Parapuzosia
148:Parapuzosia
95:Cephalopoda
620:Categories
573:Ammonitida
357:H. Landois
308:References
255:Seppenrade
247:Westphalia
121:Ammonitida
108:Ammonoidea
101:Subclass:
427:1932-6203
366:: 99–108.
239:Campanian
155:Species:
71:Kingdom:
65:Eukaryota
31:Campanian
497:Wikidata
470:: 1–127.
445:34758037
405:PLOS ONE
280:See also
235:ammonite
200:Synonyms
127:Family:
85:Mollusca
81:Phylum:
75:Animalia
61:Domain:
530:6345917
517:8641346
503:Q291703
436:8580234
353:Zittel
274:MĂĽnster
251:Germany
214:Landois
193:, 1895)
191:Landois
180:†
159:†
140:Genus:
114:Order:
91:Class:
543:312647
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389:: 1–7.
216:, 1895
571:This
257:near
577:stub
512:GBIF
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423:ISSN
323:PNAS
431:PMC
413:doi
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