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Hemithirididae

Rhynchonellata - Rhynchonellida - Hemithirididae

Taxonomy
Hemithirididae was named by Rzhonsnitskaya (1956). It is extant.

It was assigned to Rhynchonellida by Cooper (1959); and to Hemithiridoidea by Williams et al. (2002) and Emig et al. (2013).

Synonyms
Synonymy list
YearName and author
1956Hemithirididae Rzhonsnitskaya
1956Hemithyrididae Rzhosnitskaya
1959Hemithyridae Cooper p. 45
1995Hemithyrididae Chiesa et al. p. 26
2000Hemithyrididae Craig p. 114
2002Hemithirididae Williams et al. p. 1326
2013Hemithirididae Emig et al. p. 76

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderRhynchonellidaKuhn 1949
superfamilyHemithiridoideaRzhonsnitskaya 1956
familyHemithirididaeRzhonsnitskaya 1956
familyHemithirididaeRzhonsnitskaya 1956

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.

Fm. Hemithirididae Rzhonsnitskaya 1956
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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 reagani Hertlein and Grant IV 1944
Hemithyris braunsi Hayasaka 1928
Hemithyris peculiaris Nomura and Hatai 1936
G. †Patagorhynchia Allan 1938
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†Patagorhynchia patagonica Ihering 1903
Invalid names: Hemithyrididae Rzhosnitskaya 1956 [replaced]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 14:12:25
Modified: 2004-02-28 16:12:25
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

Collections (39 total)


Time interval Ma Country or state Original ID and collection number
Paleogene66.0 - 23.03Antarctica Hemithiris antarctica (153788 153789)
Ypresian56.0 - 47.8Antarctica Hemithiris sp., Hemithiris antarctica (100188) Hemithiris sp., Paraplicirhynchia gardzickii, Hemithiris antarctica (75456)
Ypresian56.0 - 47.8USA (Washington) Hemithiris reagani (146900 146901)
Priabonian38.0 - 33.9USA (Washington) Hemithiris sp. A (91606 91607)
Oligocene33.9 - 23.03USA (Washington) Hemithiris sp. A (208138)
Late/Upper Oligocene28.4 - 23.03USA (Washington) Hemithyris sp. B (208155)
Chattian28.1 - 23.03USA (Washington) Hemithiris sp. B (91615) Hemithyris sp. (52356 52362)
Early/Lower Miocene23.03 - 15.97Chile Patagorhynchia patagonica (187484)
Miocene23.03 - 5.333Japan (Hokkaido) Hemithyris psitacea (171580)
Burdigalian20.44 - 15.97Argentina Patagorhynchia patagonica (65180 187477)
Langhian15.97 - 13.82Japan Hemithyris psittacea (190756 190761)
Serravallian13.82 - 11.62Japan Hemithyris peculiaris (190741)
Pliocene5.333 - 2.588Japan Hemithyris braunsi (190799)
Piacenzian - Calabrian3.6 - 0.774Japan Hemithyris psittacea (190740)
Gelasian2.588 - 1.806Japan Hemithyris psittacea, Hemithyris woodwardi (190755)
Pleistocene2.588 - 0.0117USA (Oregon) Hemithyris psittacea (71142)
Calabrian1.8 - 0.774Japan Hemithyris psittacea (190674 190680) Hemithyris psittacea, Hemithyris woodwardi (190678 190679)
Middle Pleistocene0.774 - 0.129Japan Hemithyris psittacea (190675) Hemithyris woodwardi (190676)
Middle Pleistocene0.774 - 0.129Greenland Hemithiris psittacea (75197 75200)
Late/Upper Pleistocene0.129 - 0.0117USA (Alaska) Hemithiris psittacea (37632)
Late/Upper Pleistocene0.129 - 0.0117Greenland (Disko Island) Hemithyris psittacea (227045 227046)
Late/Upper Pleistocene0.129 - 0.0117USA (Oregon) Hemithiris sp. (37675)
Late/Upper Pleistocene0.129 - 0.0117Canada (Newfoundland and Labrador) Hemithyris psittacea (75526)
Holocene0.0117 - 0.0Greenland Hemithiris psittachea (75220)
Holocene0.0117 - 0.0Canada (Quebec) Hemithiris psittacea (51005)