Source Data | |
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Rank | species |
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Taxonomy (GBIF) | Life : Animalia : Arthropoda : Trilobita : Agnostida : Ptychagnostidae : Ptychagnostus : Ptychagnostus seminula |
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Taxonomy (PBDB) | Life : Animalia : Arthropoda : Trilobita : Agnostida : Ptychagnostidae : Ptychagnostus : Ptychagnostus seminula |
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Taxonomic Status (GBIF) | accepted |
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Classification (PBDB,GBIF) | |
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Generic Name | Ptychagnostus |
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Scientific Name | Ptychagnostus seminula (Whitehouse, 1939) |
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Opinions (PBDB) | Name | Rank | Opinion | Evidence | Author |
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Ptychagnostus seminula | species | belongs to Agnostus | stated without evidence | Whitehouse, 1939 | Ptychagnostus seminula | species | belongs to Onymagnostus | stated without evidence | Robison, 1984 | Ptychagnostus seminula | species | belongs to Ptychagnostus | stated without evidence | Westrop et al., 1996 |
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Status (PBDB) | extinct |
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Taxon Size (PBDB) | 1 |
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First Recorded Appearance | 513 - 501 Ma Cambrian |
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Last Recorded Appearance | 513 - 499 Ma Cambrian |
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Environment | marine (based on Trilobita) |
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Motility | actively mobile (based on Ptychagnostus) |
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Vision | blind (based on Ptychagnostidae) |
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Diet | suspension feeder (based on Ptychagnostus) |
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Ontogeny | molting,addition of parts (based on Trilobita) |
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Taphonomy | low Mg calcite, chitin (based on Trilobita) |
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Primary Reference (PBDB) | S. R. Westrop, R. Ludvigsen, and C. H. Kindle. 1996. Marjuman (Cambrian) agnostoid trilobites of the Cow Head Group, western Newfoundland. Journal of Paleontology 70(5):804-829 |
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