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Meekella
Taxonomy
Meekella is a genus. It is not extant. It is the type genus of Meekellidae, Meekellinae.
It was assigned to Meekellinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was assigned to Meekellinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Species
M. abnormalis, M. addicta, M. angustiplicata, M. arakeljani, M. attenuata, M. baschkirica, M. beipeiensis, M. bellistriata, M. bisculpta, M. calathica, M. caperata, M. chenxianensis, M. circularis, M. colpata, M. deltoides, M. depressa, M. dongluoensis, M. enigma, M. enormis, M. evanescens, M. eximia, M. eximiaeformis, M. garnieri, M. gigantea, M. guocunensis, M. hessensis, M. heterofolda (syn. Asiomeekella heterofolda, M. perigeyerelloides), M. intermedia, M. irregularis, M. jiangxiensis, M. julfensis, M. kayseri, M. kueichowensis (syn. M. dorsisulcata, M. langdaiensis, Parameekella hauyinshanensis), M. magnifica, M. megala, M. mexicana, M. minatoi, M. minuta, M. multilirata, M. nagaiwensis, M. nodosa, M. occidentalis (syn. M. grandis, Streptorhynchus pyramidalis), M. pacifica, M. prionota, M. procera, M. punjabica, M. pusilloplicata, M. rotunda, M. sanheensis, M. sichuanensis, M. skenoides (syn. M. difficilis), M. storta, M. striatocostata, M. texana, M. timanica, M. ufensis, M. uncitoides, M. undulata, M. uralica, M. versiformis, M. yanjiensis, M. zhejiangensis
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1985 | Parameekella He and Zhu |
| 1990 | Asiomeekella Liang p. 120 |
| 2000 | Meekella Williams et al. p. 660 |
| 2002 | Gegenella Sepkoski |
| 2002 | Meekella Sepkoski |
| 2002 | Parameekella Sepkoski |
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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. †Meekella
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†Meekella abnormalis Huang 1933
†Meekella addicta Grant 1976
†Meekella angustiplicata Cooper and Grant 1974
†Meekella arakeljani Sokolskaja 1965
†Meekella attenuata Girty 1909
†Meekella baschkirica Tschernyschew 1902
†Meekella beipeiensis Chen 2005
†Meekella bellistriata Lee and Gu 1980
†Meekella bisculpta Grant 1976
†Meekella calathica Cooper and Grant 1974
†Meekella caperata Cooper and Grant 1974
†Meekella chenxianensis Shen and Shi 2007
†Meekella circularis Cooper and Grant 1974
†Meekella colpata Grant 1976
†Meekella deltoides Liao 1980
†Meekella depressa Schellwien 1900
†Meekella dongluoensis Chen and Liao 2007
†Meekella enigma Cloud 1944
†Meekella enormis Cooper and Grant 1974
†Meekella evanescens Schellwien 1900
†Meekella eximia Eichwald 1845
†Meekella eximiaeformis Toula 1875
†Meekella garnieri Bayan 1874
†Meekella gigantea Hayasaka 1932
†Meekella guocunensis Liang 1982
†Meekella hessensis King 1931
†Meekella heterofolda Liang 1990
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Invalid names: Asiomeekella heterofolda Liang 1990 [synonym], Meekella perigeyerelloides Shen et al. 1992 [synonym]
†Meekella intermedia Cooper and Grant 1974
†Meekella irregularis Schellwien 1900
†Meekella irregularis texana King 1931
†Meekella jiangxiensis Hu and Jin 1982
†Meekella julfensis Garbelli et al. 2014
†Meekella kayseri Jaekel 1892
†Meekella kueichowensis Huang 1933
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Invalid names: Meekella dorsisulcata Feng 1978 [synonym], Meekella langdaiensis Liao 1980 [synonym], Parameekella hauyinshanensis He and Zhu 1985 [synonym]
†Meekella magnifica Cooper and Grant 1974
†Meekella megala Grant 1993
†Meekella mexicana Girty 1909
†Meekella minatoi Nakamura 1972
†Meekella minuta Zeng et al. 1995
†Meekella multilirata Girty 1909
†Meekella nagaiwensis Shintani 2011
†Meekella nodosa Nakamura 1972
†Meekella occidentalis Newberry 1861
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Invalid names: Meekella grandis King 1931 [synonym], Streptorhynchus pyramidalis Newberry 1861 [synonym]
†Meekella pacifica Licharew and Kotlyar 1978
†Meekella prionota Cooper and Grant 1974
†Meekella procera Schellwien 1900
†Meekella punjabica Reed 1944
†Meekella pusilloplicata Liao 1980
†Meekella rotunda Branson 1930
†Meekella sanheensis Liao and Meng 1986
†Meekella sichuanensis Shen et al. 1992
†Meekella storta Glushenko 1975
†Meekella striatocostata Cox 1857
†Meekella texana King 1931
†Meekella timanica Tschernyschew 1902
†Meekella ufensis Tschernyschew 1902
†Meekella uncitoides Tschernyschew 1902
†Meekella undulata Chang 1987
†Meekella uralica Tschernyschew 1902
†Meekella versiformis Shen et al. 1992
†Meekella yanjiensis Lee and Gu 1980
†Meekella zhejiangensis Liang 1982
Invalid names: Asiomeekella Liang 1990 [synonym], Gegenella [synonym], Parameekella He and Zhu 1985 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 210 | 15.9 | 1.70 | 90.0 | 17.8 | 12.3 | |
| valve height | 6 | 16.8 | 13.2 | 19.9 | 17.2 | 2.16 |
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| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Serpukhovian to the top of the Changhsingian or 330.90000 to 252.17000 Ma
Collections (774 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Carboniferous | USA (Oklahoma) | M. sp. (172) | |
| Carboniferous | USA (Texas) | M. striaticostata (1119) | |
| Serpukhovian | USA (Oklahoma) | M. striatocostata (5611) | |
| Moscovian | South Korea | M. sp. (128278 128279 128280) | |
| Desmoinesian | USA (Kansas) | M. striatocostata (980 76171) | |
| Kasimovian | USA (Nevada) | M. striatocostata (144024) | |
| Kasimovian - Gzhelian | China (Xinjiang) | M. sp. (50237) M. sp., M. uralica (50238) M. uralica (50239) | |
| Missourian | USA (Kansas) | M. sp. (167 171) | |
| Missourian | USA (Texas) | M. sp. (43873) | |
| Gzhelian | USA (Wyoming) | M. attenuata (81193) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Changhsingian | China (Guangxi) | M. arakeljani (112433) M. arakeljani, M. kueichowensis (138525) M. dongluoensis (74731 97023) M. kueichowensis (138532 138533 138534 138535 149204) M. sp. (149207 206105 206152 206156) M. sp., M. kueichowensis (107298) | |
| Changhsingian | China (Shaanxi) | M. abnormalis (148517) M. langdaiensis (50034) | |
| Changhsingian | China (Zhejiang) | M. sp. (61869 61871 111641 111642) | |
| Changhsingian | China (Sichuan) | M. kueichowensis, M. dorsisulcata (95283) M. langdaiensis (138367) M. sichuanensis, M. perigeyerelloides, M. zhejiangensis (117502) M. sp. (156815) | |
| Changhsingian | Pakistan (Punjab) | Orthothetina arakeljani (41564) | |
| Changhsingian | Thailand | M. kueichowensis (42776) M. sp. (8145) | |
| Changhsingian | China (Chongqing) | M. arakeljani, M. beipeiensis (138454) M. arakeljani, M. kueichowensis, M. beipeiensis, M. deltoides (138386) M. arakeljani, M. sichuanensis, M. perigeyerelloides, M. dorsisulcata, M. deltoides, M. versiformis (94984) M. beipeiensis (138387 138388 138455) M. deltoides (94986 148543) M. dorsisulcata (94977) M. eximia (94978) M. kueichowensis (138456 148549 156848 156855 156863) M. kueichowensis, M. deltoides (148548) M. sichuanensis (94985) M. sp. (94969 94980 94987 148550 156880 156882) M. sp., M. kueichowensis (149259) | |
| Changhsingian | China (Guangdong) | M. sp. (95679) | |
| Changhsingian | China (Guizhou) | M. arakeljani (138505) M. arakeljani, M. dorsisulcata (117481) M. arakeljani, M. kueichowensis (138502) M. arakeljani, M. kueichowensis, M. dorsisulcata (117483) M. arakeljani, M. kueichowensis, M. langdaiensis (112090) M. dorsisulcata (108152 117487) M. dorsisulcata, M. langdaiensis (117465) M. kueichowensis (111062 117486) M. sp. (149301) | |
| Changhsingian | China (Hunan) | M. arakeljani, M. kueichowensis, M. chenxianensis (138548) M. sanheensis (105918) | |