Reference Type | Journal (article/letter/editorial) |
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Title | Paedomorphosis and cryptogenesis in trilobites |
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Journal | Geological Magazine |
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Authors | Whittington, H. B. | Author |
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Year | 1981 (November) | Volume | 118 |
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Issue | 6 |
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Publisher | Cambridge University Press (CUP) |
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DOI | doi:10.1017/s0016756800033823Search in ResearchGate |
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| Generate Citation Formats |
Mindat Ref. ID | 252006 | Long-form Identifier | mindat:1:5:252006:7 |
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GUID | 0 |
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Full Reference | Whittington, H. B. (1981) Paedomorphosis and cryptogenesis in trilobites. Geological Magazine, 118 (6) 591-602 doi:10.1017/s0016756800033823 |
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Plain Text | Whittington, H. B. (1981) Paedomorphosis and cryptogenesis in trilobites. Geological Magazine, 118 (6) 591-602 doi:10.1017/s0016756800033823 |
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In | (1981, November) Geological Magazine Vol. 118 (6) Cambridge University Press (CUP) |
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Abstract/Notes | SummaryStubblefield suggested that proparian trilobites may have arisen by paedomorphosis. Examples of the role of paedomorphosis in the evolution of species and of particular organs are reviewed. The cryptogenetic renewal of trilobites after the Cambrian resulted in distinctive major taxa, but their relationships to each other and to older groups remain unsolved. Similarities between early developmental stages should be re-assessed as a possible guide to relationships. The early Upper Cambrian, type species of the proparian Schmalenseeia is re-described. It was small, possibly world-wide in distribution, the exoskeleton thin, the parts not articulated, apparently forming a more or less rigid shield. It may have been a paedomorphic, planktic species, but its origin and relationships are obscure. |
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