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Hemithiris
Taxonomy
Hemithiris was named by d'Orbigny (1847) [Sepkoski's age data: T Mi R Sepkoski's reference number: 1]. It is extant.
It was corrected as Hemithyris by Dall (1895).
It was assigned to Brachiopoda by Dall (1895); to Rhynchonellidae by Hertlein and Grant IV (1944); to Hemithyridae by Cooper (1959); to Rhynchonellida by Sepkoski (2002); and to Hemithirididae by Williams et al. (2002).
It was corrected as Hemithyris by Dall (1895).
It was assigned to Brachiopoda by Dall (1895); to Rhynchonellidae by Hertlein and Grant IV (1944); to Hemithyridae by Cooper (1959); to Rhynchonellida by Sepkoski (2002); and to Hemithirididae by Williams et al. (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Hemithiris d'Orbigny |
| 1895 | Hemithyris Dall |
| 1944 | Hemithiris Hertlein and Grant IV p. 41 |
| 1959 | Hemithyris Cooper p. 45 |
| 2002 | Hemithiris Sepkoski |
| 2002 | Hemithiris Williams et al. p. 1326 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. Hemithiris d'Orbigny 1847
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†Hemithiris antarctica Buckman 1910
†Hemithiris dibbleei Hertlein and Grant IV 1944
†Hemithiris parvillima Sacco 1902
Hemithiris psittacea Gmelin 1790
†Hemithiris psittacea alaskana Dall 1920
†Hemithiris reagani Hertlein and Grant IV 1944
Hemithiris woodwardi Adams 1863
Hemithyris braunsi Hayasaka 1928
Hemithyris peculiaris Nomura and Hatai 1936
Hemithyris psittacea Gmelin 1790
Terebratula psitacea Gmelin 1790
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| height | 1 | 7.28 | |||||
| shell height | 1 | 4.20 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Ypresian to the top of the Holocene or 56.00000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 47.8 Ma
Minimum age of oldest fossil (stem group age): 47.8 Ma
Collections (36 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paleogene | Antarctica | H. antarctica (153788 153789) | |
| Ypresian | Antarctica | H. sp., H. antarctica (75456 100188) | |
| Ypresian | USA (Washington) | H. reagani (146900 146901) | |
| Priabonian | USA (Washington) | H. sp. A (91606 91607) | |
| Oligocene | USA (Washington) | H. sp. A (208138) | |
| Late/Upper Oligocene | USA (Washington) | Hemithyris sp. B (208155) | |
| Chattian | USA (Washington) | H. sp. B (91615) Hemithyris sp. (52356 52362) | |
| Miocene | Japan (Hokkaido) | Hemithyris psitacea (171580) | |
| Langhian | Japan | Hemithyris psittacea (190756 190761) | |
| Serravallian | Japan | Hemithyris peculiaris (190741) | |
| Pliocene | Japan | Hemithyris braunsi (190799) | |
| Piacenzian - Calabrian | Japan | Hemithyris psittacea (190740) | |
| Gelasian | Japan | Hemithyris psittacea, Hemithyris woodwardi (190755) | |
| Pleistocene | USA (Oregon) | Hemithyris psittacea (71142) | |
| Calabrian | Japan | Hemithyris psittacea (190674 190680) Hemithyris psittacea, Hemithyris woodwardi (190678 190679) | |
| Middle Pleistocene | Japan | Hemithyris psittacea (190675) Hemithyris woodwardi (190676) | |
| Middle Pleistocene | Greenland | H. psittacea (75197 75200) | |
| Late/Upper Pleistocene | Greenland (Disko Island) | Hemithyris psittacea (227045 227046) | |
| Late/Upper Pleistocene | USA (Alaska) | H. psittacea (37632) | |
| Late/Upper Pleistocene | Canada (Newfoundland and Labrador) | Hemithyris psittacea (75526) | |
| Late/Upper Pleistocene | USA (Oregon) | H. sp. (37675) | |
| Holocene | Greenland | H. psittachea (75220) | |
| Holocene | Canada (Quebec) | H. psittacea (51005) |