Source Data | |
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Rank | species (PBDB) |
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Taxonomy (PBDB) | Life : Animalia : Echinodermata : Echinoidea : Spatangoida : Hemiasteridae : Hemiaster : Hemiaster proclivus |
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Classification (PBDB,GBIF) | |
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Opinions (PBDB) | Name | Rank | Opinion | Evidence | Author |
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Hemiaster proclivus | species | belongs to Hemiaster | stated with evidence | Cotteau et al., 1878 |
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Status (PBDB) | extinct |
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Taxon Size (PBDB) | 1 |
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First Recorded Appearance | 105 - 100 Ma Cretaceous |
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Last Recorded Appearance | 105 - 100 Ma Cretaceous |
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Environment | marine (based on Spatangoida) |
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Motility | slow-moving (based on Spatangoida) |
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Vision | limited (based on Echinoidea) |
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Diet | deposit feeder, detritivore (based on Spatangoida) |
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Reproduction | dispersal=water,planktonic (based on Spatangoida) |
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Ontogeny | accretion,addition of parts (based on Echinodermata) |
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Taphonomy | high Mg calcite (based on Spatangoida) |
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Primary Reference (PBDB) | A. B. Smith. 1991. Taxonomic descriptions, in Cretaceous echinoids from north-eastern Brazil. Fossils and Strata 31:1-88 |
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