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Leptodesma
Taxonomy
Leptodesma was named by Hall (1883) [Sepkoski's age data: O Cara-m P Guad-u]. Its type is Leptodesma rogersi.
It was assigned to Pteriacea by Amler (1992); to Pterioida by Sepkoski (2002); to Leptodesmatinae by Bouchet et al. (2010); and to Pterineidae by Vokes (1980), Anelli et al. (2006) and Amler (2010).
It was assigned to Pteriacea by Amler (1992); to Pterioida by Sepkoski (2002); to Leptodesmatinae by Bouchet et al. (2010); and to Pterineidae by Vokes (1980), Anelli et al. (2006) and Amler (2010).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Leptodesma Hall |
| 1940 | Dozierella Newell p. 282 |
| 1980 | Leptodesma Vokes p. 35 |
| 1992 | Leptodesma Amler p. 413 |
| 2002 | Leptodesma Sepkoski |
| 2006 | Leptodesma Anelli et al. p. 1130 |
| 2010 | Leptodesma Amler p. 17 |
| 2010 | Leptodesma Bouchet et al. |
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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. †Leptodesma Hall 1883
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Subg. †Leptodesma (Leiopteria) Hall 1883
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†Leiopteria angusticoncha Gemmellaro 1896
†Leiopteria australis Etheridge Jr. 1898
†Leiopteria carrandibbiensis Dickins 1957
†Leiopteria consimilis Gemmellaro 1896
†Leiopteria elegans de Gregorio 1930
†Leiopteria inflata Gemmellaro 1896
†Leiopteria opportuna Barrande 1881
†Leiopteria rafinesquii Hall 1883
†Leiopteria verrucosa Gemmellaro 1892
†Leptodesma (Leiopteria) aviculaeformis Stuckenberg 1898
†Leptodesma (Leiopteria) bonaerensis Harrington 1955
†Leptodesma (Leiopteria) buhaheensis Lu 1986
†Leptodesma (Leiopteria) dutoiti Harrington 1955
†Leptodesma (Leiopteria) zhangi Li 1995
Invalid names: Leptodesma (Leiopteria) falcata Xu and Chang 1980 [nomen nudum], Leptodesma (Leiopteria) guizhouensis Xu and Chang 1980 [nomen nudum]
Subg. †Leptodesma (Leptodesma) Hall 1883
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†Leptodesma (Leptodesma) adaroi Amler 2010
†Leptodesma (Leptodesma) anatinum Whidborne 1897
†Leptodesma (Leptodesma) cultellata Whidborne 1897
†Leptodesma (Leptodesma) falcata Boyd and Newell 2001
†Leptodesma (Leptodesma) matheri Elias 1957
†Leptodesma (Leptodesma) occidentale Girty 1927
†Leptodesma (Leptodesma) potens Hall 1883
†Leptodesma (Leptodesma) rhysema Hoare 2007
†Leptodesma potens Hall 1883
Subg. †Leptodesma (Springeria) Elias 1957
†Leptodesma bakewellioides Yakovlev 1903
†Leptodesma chidruensis Waagen 1881
†Leptodesma eolus Kindle 1909
†Leptodesma gouldii Beede 1902
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Invalid names: Cyrtodontarca multidentata Beede 1907 [synonym], Cyrtodontarca parallelidentata Beede 1907 [synonym]
†Leptodesma guadalupensis Girty 1908
†Leptodesma indistincta Biakov 2002
†Leptodesma rogersi Hall 1883
†Leptodesma spinigerum Conrad 1842
†Leptodesma transversa Walcott 1884
†Leptodesma welleri Sayre 1930
†Leptodesma wupperanum Dahmer 1943
†Leptodesma wupperanum eifelense Dahmer 1943
Invalid names: Dozierella Newell 1940 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 1 | 18.2 | - | - | - | - | |
| shell height | 8 | 14.8 | 10.0 | 25.0 | 14.0 | 5.24 | |
| valve height | 65 | 9.29 | 2.10 | 48.5 | 9.00 | 8.45 |
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| Source: g = genus, f = family, o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004, Hendy 2009 | |||||
Age range: base of the Zahorany to the top of the Changhsingian or 457.50000 to 252.17000 Ma
Collections (590 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Letna - Harnagian | Czech Republic | L. patricia (3861) | |
| Harnagian - Soudleyan | Norway (Hamar -Nes) | L. transversa (162624) | |
| Zahorany - Late/Upper Ordovician | Czech Republic | L. sp. (3865) | |
| Burrellian | United Kingdom (Scotland) | L. ardmillanensis (156584) | |
| Silurian | USA (New York) | L. sp. (531) | |
| Silurian | Canada (Manitoba) | Leiopteria subplana (26737) | |
| Llandovery | Canada (Ontario) | Leiopteria sp. (444) | |
| Llandovery | USA (New York) | Leiopteria sp. (443) Leiopteria sp., L. sp. (463) L. rhomboidea (77054) L. sp. (458) | |
| Llandovery | Canada (Nova Scotia) | L. subrhomboidea (3066 3168) | |
| Llandovery - Wenlock | China (Jiangxi) | L. sp. (27897) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Wuchiapingian | China (Guizhou) | L. falcata (112000 112002) | |
| Lopingian | India | Leiopteria sp. (230328) | |
| Lopingian | Bosnia and Herzegovina | Leiopteria sp. (206739) | |
| Wuchiapingian - Changhsingian | China (Hunan) | L. sp. (105946) | |
| Changhsingian | Japan | L. sp. (115234) | |
| Changhsingian | Pakistan | Avicula chidruensis (81504 89061) | |
| Changhsingian | USA (Texas) | Dozierella gouldii (50001 50021) | |
| Changhsingian | China (Guizhou) | L. falcata (112085) L. guizhouensis (111983 112009 112089 112090 112094) L. sp. (149295) | |
| Changhsingian | China (Guangxi) | L. sp. (149217) | |
| Changhsingian | China (Fujian) | L. sp. (95479) L. zhangi (111733) | |