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Unionites
Taxonomy
Unionites was named by Wissman (1841) [Sepkoski's age data: Tr Indu-l Tr Nori-u Sepkoski's reference number: 94]. It is not extant.
It was assigned to Trigonodidae by Vokes (1980); to Unionoida by Sepkoski (2002); to Anthracosiidae by Geyer et al. (2005) and Foster et al. (2017); and to Trigonodoidae by Biakov and Kutygin (2021).
It was assigned to Trigonodidae by Vokes (1980); to Unionoida by Sepkoski (2002); to Anthracosiidae by Geyer et al. (2005) and Foster et al. (2017); and to Trigonodoidae by Biakov and Kutygin (2021).
Species
Anodontophora angulata, Anodontophora conjugens, Anodontophora edmondiiformis, Anodontophora elongata, Anodontophora omolonica, Anodontophora purdoni, Anodontophora sublettica, Anodontophora subovalis, Anodontophora telleri, Anoplophora isocardioides, Anoplophora pappi, Anoplophora recta, Anoplophora shastensis, Anoplophora torreana, Myacites (Pleuromya), Myacites baconicus, Myacites depressus, Myacites faba, Myacites grandis, Myacites inconspicuus, Myacites musculoides, Myacites obtusus, Myacites radiatus, U. albertii, U. bittneri, U. borealis, U. breviformis, U. brevis, U. canalensis, U. donacinus, U. elisabethae, U. fassaensis, U. gregarius, U. griesbachi, U. guizhouensis, U. jacobi (syn. Allorisma tirolense, Anthracosia ladina), U. kobyumensis, U. letticus, U. manmuensis, U. minimus, U. muensteri, U. ovalis, U. posterus, U. rhomboidalis, U. sorokovi, U. spicatus, U. subrectus, U. trapezoidalis
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1820 | Myacites Schlotheim |
| 1841 | Unionites Wissman |
| 1864 | Anoplophora Alberti |
| 1864 | Myacites Meek p. 51 |
| 1873 | Myacites Meek |
| 1897 | Anodontophora Cossmann |
| 1927 | Anodontophora (Myacites) Ogilvie Gordon |
| 1980 | Anodontophora Vokes |
| 1980 | Unionites Vokes p. 95 |
| 2002 | Unionites Sepkoski |
| 2005 | Unionites Geyer et al. |
| 2017 | Unionites Foster et al. p. 862 |
| 2021 | Unionites Biakov and Kutygin p. 375 |
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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. †Unionites Wissman 1841
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†Unionites albertii Assmann 1915
†Unionites bittneri Frech 1907
†Unionites borealis Spath 1935
†Unionites breviformis Spath 1935
†Unionites brevis von Schauroth 1857
†Unionites canalensis Catullo 1847
†Unionites donacinus Schlotheim 1820
†Unionites elisabethae Patte 1926
†Unionites fassaensis Wissmann 1841
†Unionites gregarius Quenstedt 1858
†Unionites griesbachi Bittner 1899
†Unionites guizhouensis Chen 1976
†Unionites jacobi Stache 1878
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Invalid names: Allorisma tirolense Stache 1878 [synonym], Anthracosia ladina Stache 1878 [synonym]
†Unionites kobyumensis Biakov and Kutygin 2021
†Unionites letticus Quenstedt 1852
†Unionites manmuensis Reed 1927
†Unionites minimus Mansuy 1919
†Unionites muensteri Wissmann 1841
†Unionites ovalis Trechmann 1917
†Unionites posterus Frass 1859
†Unionites rhomboidalis Chen and Zhang 1974
†Unionites sorokovi Kurushin 1992
†Unionites spicatus Chen 1976
†Unionites subrectus Bittner 1901
†Unionites trapezoidalis Mansuy 1919
Invalid names: Anodontophora Cossmann 1897 [synonym], Myacites Schlotheim 1820 [replaced]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 19 | 14.6 | 4.21 | 45.0 | 13.8 | 11.3 | |
| valve height | 94 | 9.86 | 3.40 | 36.0 | 9.00 | 6.71 |
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| Source: c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Wordian to the top of the Late/Upper Kimmeridgian or 266.90000 to 150.80000 Ma
Collections (690 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wordian | Pakistan | Anodontophora purdoni (125837 125844) Anodontophora purdoni, Anodontophora conjugens (125807) Cardinia conjugens (119726) | |
| Wuchiapingian | Pakistan | Anodontophora conjugens (127010) | |
| Lopingian | Bosnia and Herzegovina | Cleidophorus jacobi (206739) | |
| Changhsingian | Russian Federation (Sakha) | U. canalensis (206758) | |
| Changhsingian | Russian Federation | U. kobyumensis (221955) | |
| Changhsingian | Italy | Allorisma tirolense (232368) U. jacobi (230016 230017 230019 230020 230021 230022 230023 230026 230027 230028 230029 230030 230031 230033 230034 230035 230038 230040 230041 230042 230043 230044 230045 230046 230047 230048 230049 230050 230051 230052 230053 230054) U. sp. (74939 87192 101937) | |
| Induan | Greenland (Northeast Greenland National Park) | Anodontophora fassaensis (143870) | |
| Induan | Svalbard and Jan Mayen (Barentsøya) | Anodontophora sp. (212889) | |
| Induan | Malaysia | U. sp. (99883) | |
| Induan | Japan (Kochi) | U. fassaensis, U. canalensis (40245) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Bajocian | USA (Wyoming) | Pleuromya subcompressa (36527 167070 167088 167090 167091 167093 167094 167095 167097 167098 167144 167149 172981) | |
| Bajocian | USA (Wyoming ) | Pleuromya subcompressa (167071 167072 167073 167076 167081 167082 167085) | |
| Bajocian | USA (Idaho) | Pleuromya subcompressa (167039 167053) | |
| Bajocian - Bathonian | USA (Montana) | Pleuromya subcompressa (68832 68837 68838 68839) | |
| Bajocian - Bathonian | USA (Utah) | Pleuromya subcompressa (171928 171929 171930 171952 172004 172015) | |
| Bathonian | USA (Utah) | Pleuromya subcompressa (169155) | |
| Bathonian | USA (Montana) | Pleuromya subcompressa (68848 68851 68853 68854 68856 68858 68859 68862 68865 68869 68871) | |
| Callovian | USA (Wyoming) | Pleuromya subcompressa (172984) | |
| Oxfordian | United Kingdom (England) | Myacites recurvus (100669) | |
| Late/Upper Kimmeridgian | United Kingdom (England) | Myacites recurvus (70997) | |