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233:. It consists of repeated monoplacophoran-like shells; according to one hypothesis, chitons arose when these tall shells began to overlap over the generations. The tall element of the shell was retained and forms the tips of modern chiton plates. There are distinct head, 'centre', and tail valves, which occur approximately in the ratio 1:5:1 — suggesting a seven-plated configuration.
503:
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Runnegar, B.; Pojeta, J.; Taylor, M. E.; Collins, D. (1979). "New
Species of the Cambrian and Ordovician Chitons Matthevia and Chelodes from Wisconsin and Queensland: Evidence for the Early History of Polyplacophoran Mollusks".
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Pojeta, J.; Taylor, J. F.; Darrough, G. U. Y. (2005). "Matthevia (Polyplacophora) Invades the
Ordovician: The First Reported Post-Cambrian Occurrence".
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Runnegar, B.; Pojeta Jr, J. (Oct 1974). "Molluscan
Phylogeny: the Paleontological Viewpoint".
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Walcott, C. D., 1885, Note on some
Paleozoic pteropods: Am. Jour. Sci., v. 30, p. 17-21.
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Ellis L. Yochelson; J. F. McAllister & Anthony Reso (1965).
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10.1666/0022-3360(2005)079[1021:MPITOT]2.0.CO;2
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Geological Survey
Research 1965, Professional Paper 525-B
271:"Stratigraphic Distribution of the Late Cambrian Mollusk
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574:Cambrian molluscs of North America
517:. You can help Knowledge (XXG) by
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236:Matthevia was first described by
229:molluscs, perhaps related to the
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32:Late Cambrian–Lower Ordovician
1:
584:Early Ordovician extinctions
344:10.1126/science.186.4161.311
115:. Coin: 19 mm diameter
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589:Cambrian genus extinctions
579:Cambrian first appearances
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594:Prehistoric mollusc stubs
564:Prehistoric chiton genera
121:Scientific classification
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16:Extinct genus of molluscs
376:Journal of Paleontology
294:Journal of Paleontology
476:Paleobiology Database
336:1974Sci...186..311R
238:Charles D. Walcott
569:Cambrian molluscs
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509:This prehistoric
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405:Taxon identifiers
330:(4161): 311–317.
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300:(5): 1021.
558:Categories
281:: B73–B78.
256:References
111:Plates of
413:Matthevia
273:Matthevia
240:in 1885.
222:Matthevia
208:Matthevia
144:Kingdom:
138:Eukaryota
113:Matthevia
25:Matthevia
428:Q6789798
422:Wikidata
360:17839855
250:Mattheva
244:See also
227:Cambrian
187:Family:
158:Mollusca
154:Phylum:
148:Animalia
134:Domain:
511:mollusc
468:1301201
455:4584543
352:1739764
332:Bibcode
324:Science
231:chitons
200:Genus:
174:Order:
164:Class:
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463:IRMNG
442:85G3T
348:JSTOR
515:stub
481:8035
450:GBIF
356:PMID
37:PreꞒ
437:CoL
340:doi
328:186
302:doi
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87:Pg
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204:†
191:†
178:†
92:N
82:K
77:J
72:T
67:P
62:C
57:D
52:S
47:O
42:Ꞓ
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