| Source Data | |
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| Rank | species (PBDB) |
|---|
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Bivalvia : Pectinida : Monotidae : Monotis : Monotis (Pacimonotis) subcircularis |
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Classification
(PBDB,GBIF) | |
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| Opinions (PBDB) | | Name | Rank | Opinion | Evidence | Author |
|---|
| Monotis (Pacimonotis) subcircularis | species | belongs to Monotis (Pacimonotis) | stated with evidence | Gabb, 1864 |
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| Status (PBDB) | extinct |
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| Taxon Size (PBDB) | 1 |
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| First Recorded Appearance | 237 - 209 Ma
Late/Upper Triassic |
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| Last Recorded Appearance | 212 - 201 Ma
Mesozoic |
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| Environment | marine (based on Pectinida) |
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| Motility | stationary (based on Monotidae) |
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| Vision | blind (based on Bivalvia) |
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| Diet | suspension feeder (based on Pectinida) |
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| Taphonomy | low Mg calcite (based on Monotidae) |
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| Primary Reference (PBDB) | W. M. Gabb. 1864. Description of the Triassic fossils of California and the adjacent territories. Geological Survey of California Palaeontology 1:19-35 |
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| Year | Name and Author |
|---|
| 1864 | Monotis (Pacimonotis) subcircularis Gabb |
| 1864 | Monotis subcircularis Gabb p. 31 figs. Pl 6, figs 29,29a |
| 1912 | Monotis subcircularis Kittl |
| 1918 | Monotis intermedia Trechmann |
| 1927 | Pseudomonotis subcircularis Smith p. 120 figs. Pl 95, figs 8,9; pl 101, fig 8; pl 104, figs 6,7; pl 106, figs 6,7 |
| 1953 | Monotis gigantea Avias |
| Gabb W. M. Description of the Triassic fossils of California and the adjacent territories, Geological Survey of California Palaeontology 1, 19-35 |
| Kittl E. (1912) Materialen zu einer Monographie der Halobiidae und Monotidae der Trias [Monograph on the Halobiidae and Monotidae of the Triassic], Resultate der Wissenschaftlichen Erforschung des Balatonsees, II Band: Paläontologie der Umgebung des Balatonsees 1 4, 1-229 |
| Smith J. P. (1927) Upper Triassic marine invertebrate faunas of North America, United States Geological Survey Professional Paper 141, 1-262 |
| Bychkov Yu. M., Dagys A. S., et al (1976) Atlas Triasovoj fauny i fory Severo-Vostoka SSSR [Atlas of Triassic fauna\r\nand flora from North-East USSR], 1-267 |
| Grant-Mackie J. A. (1978) Subgenera of the Upper Triassic bivalve Monotis, New Zealand Journal of Geology and Geophysics 21 1, 97-111 doi:10.1080/00288306.1978.10420726 |
| Silberling N. J., Grant-Mackie J. A., et al (1997) The Late Triassic bivalve Monotis in accreted terranes of Alaska, United States Geological Survey Bulletin 2151, 1-21 |
| Taylor D. G., Guex J. (2002) The Triassic/Jurassic System boundary in the John Day Inlier, east-central Oregon, Oregon Geology 64, 3-28 |
| McRoberts C. A. (2011) Late Triassic Bivalvia (Chiefly Halobiidae and Monotidae) from the Pardonet Formation, Williston Lake Area, Northeastern British Columbia, Canada, Journal of Paleontology 85 4, 613-664 doi:10.1666/10-051.1 |
Monotis (Pacimonotis) subcircularis ✝
