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Roundyella
Taxonomy
Roundyella is a genus. It is not extant. Its type is Amphissites simplicissimus.
It was assigned to Palaeocopida by Sepkoski (2002); and to Scrobiculidae by Sohn (1961), Benson et al. (1961), Fohrer and Samankassou (2005).
It was assigned to Palaeocopida by Sepkoski (2002); and to Scrobiculidae by Sohn (1961), Benson et al. (1961), Fohrer and Samankassou (2005).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Roundyella Benson et al. p. Q169 |
| 1961 | Roundyella Sohn p. 149 |
| 2002 | Roundyella Sepkoski |
| 2005 | Roundyella Fohrer and Samankassou p. 325 |
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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. †Roundyella
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†Roundyella bellatula Bradfield 1935
†Roundyella dorsopapillosa Sohn 1954
†Roundyella kroemmelbeini Kozur 1985
†Roundyella lebaensis Krommelbein 1958
†Roundyella ludbrookae Fleming 1985
†Roundyella neopapillosa Ishizaki 1964
†Roundyella ovatiformis Hou 1954
†Roundyella papilliformis Wang 1978
†Roundyella simplex Girty 1910
†Roundyella simplicissima Knight 1928
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| carapace height | 3 | 0.277 | 0.250 | 0.340 | 0.250 | 0.052 | |
| shell height | 3 | 0.345 | 0.280 | 0.420 | 0.350 | 0.070 | |
| valve height | 14 | 0.413 | 0.165 | 0.640 | 0.420 | 0.126 |
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| Source: o = order, c = class | |||||
| References: Alvarez et al. 2008, Kiessling 2004 | |||||
Age range: base of the Early/Lower Givetian to the top of the Griesbachian or 387.95000 to 250.50000 Ma
Collections (104 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Givetian | Czechia (Moravia) | R. augustai (5767) | |
| Givetian | China | R. reticulata (235938) | |
| Givetian | USA (New York) | R. concentrica (94047) | |
| Frasnian | China (Hunan) | R. sp. (40946) | |
| Kinderhookian | USA (Indiana) | R. mopacifa (6734) | |
| Osagean | USA (California) | R. n. sp. aff. Scrobicula crestiformis (225970) | |
| Meramecian | USA (Arkansas) | R. simplex (76148) R. sp. (76118) | |
| Chesterian | USA (Arkansas) | R. sp. (76146) | |
| Serpukhovian | USA (Oklahoma) | R. bellatula (5611) | |
| Morrowan | USA (Texas) | R. bellatula (236937) | |
| Pennsylvanian | USA (Texas) | Amphissites simplicissimus (210784) | |
| Desmoinesian | USA (Missouri) | Amphissites simplicissimus (215052 215053) | |
| Gzhelian | USA (Kansas) | Amphissites simplicissimus (95377 133141 133148 133149) | |
| Asselian | Austria | R. sp. (108503) | |
| Sakmarian | Australia (Western Australia) | R. ludbrookae (108208 108209 108210 108211 108223 108230 108236 108237 108241 108242 108243 108244 108245 108246 108247 108278 108279 108280 108281 108285 108287 108288 108292 108293 108294 108296 108297 108298 108299) | |
| Sakmarian | USA (Kansas) | Amphissites simplicissimus (88235 95375) | |
| Sakmarian | China (Zhejiang) | R. papilliformis (120910) | |
| Artinskian | China (Fujian) | R. simplicissima (95702) | |
| Artinskian | USA (Texas) | R. dorsopapillosa (117948) | |
| Artinskian | Canada (British Columbia) | R. simplicissima (106671) | |
| Artinskian | USA (Kansas) | Amphissites simplicissimus (110316 110319) | |
| Kungurian | China (Jiangsu) | R. simplicissima (142185 142186 142187 142188) | |
| Kungurian | China (Fujian) | R. simplicissima (95704 95705 95708) | |
| Kungurian | China (Hubei) | R. ovatiformis (145990) | |
| Kungurian | Venezuela (Merida) | R. sp. (41512) | |
| Kungurian | USA (Texas) | R. dorsopapillosa (43517) | |
| Wordian | Oman | R. bellatula (49918) | |
| Capitanian | Japan | R. neopapillosa (109844) | |
| Capitanian | China (Sichuan) | R. sp.1 (189439 189441 189445 189446 189461 189464) R. sp.2 (189462) | |
| Wuchiapingian | Lithuania | R. lebaensis (46170 46414 46520) | |
| Wuchiapingian | Hungary | R. kroemmelbeini (146217) R. lebaensis (146218) | |
| Wuchiapingian | Russian Federation (Kaliningrad) | R. lebaensis (46425) | |
| Wuchiapingian | Italy | R. sp. (110840) | |
| Wuchiapingian | Svalbard and Jan Mayen | R. simplicissima (145693) R. simplicissima, R. lebaensis (145692) | |
| Wuchiapingian | Iran | R. kroemmelbeini (155127 155128 155129 155130 155131 155132 155133 155137) | |
| Wuchiapingian - Changhsingian | Israel | R. papilliformis (95762) | |
| Changhsingian | China (Fujian) | R. dorsopapillosa (121288) R. papilliformis (121203 121290) R. simplicissima (121225 121228) R. simplicissima, R. dorsopapillosa, R. papilliformis (121291) R. simplicissima, R. papilliformis (121230 121293) | |
| Changhsingian | Israel | R. papilliformis (108988 108990) | |
| Griesbachian | Iran | R. papilliformis (168942) |