| Reference Type | Journal (article/letter/editorial) |
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| Title | Systematics and paleobiogeography of Late TriassicGryphaea(Bivalvia) from the North American Cordillera |
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| Journal | Journal of Paleontology |
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| Authors | Mcroberts, Christopher A. | Author |
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| Year | 1992 (January) | Volume | 66 |
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| Issue | 1 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0022336000033461Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 415479 | Long-form Identifier | mindat:1:5:415479:6 |
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| GUID | 0 |
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| Full Reference | Mcroberts, Christopher A. (1992) Systematics and paleobiogeography of Late TriassicGryphaea(Bivalvia) from the North American Cordillera. Journal of Paleontology, 66 (1) 28-39 doi:10.1017/s0022336000033461 |
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| Plain Text | Mcroberts, Christopher A. (1992) Systematics and paleobiogeography of Late TriassicGryphaea(Bivalvia) from the North American Cordillera. Journal of Paleontology, 66 (1) 28-39 doi:10.1017/s0022336000033461 |
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| In | (1992, January) Journal of Paleontology Vol. 66 (1) Cambridge University Press (CUP) |
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| Abstract/Notes | Evaluation of previously undescribed collections of Late TriassicGryphaeafrom the North American Cordillera increases the temporal range and geographic distribution of the genus.Gryphaea(Gryphaea)arcuataeformisKiparisova,G.cf.G.(Gryphaea)keilhauiBöhm, and a new species,G.(Gryphaea)nevadensis, occur in lower Carnian to upper Norian strata from Alaska, British Columbia, Oregon, and Nevada. The distribution is mostly primary with respect to the Upper Triassic North American Craton, and requires long-distance larval dispersal along the latitude of far-eastern Panthalassa. Unlike most modern oysters, the distribution of these Triassic gryphaeids may have been restricted to cool and deeper water environments.An early Carnian age ofGryphaea(Gryphaea)arcuataeformisplaces this species as the oldest knownGryphaea. When combined with late Carnian and Norian occurrences from the North and South American Cordillera, these data indicate that a low-latitude origin for the genus cannot be overlooked. Gryphaeids survived the end-Triassic extinction event presumably by living in refugia. |
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