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Cleiothyridina semiconcava
Taxonomy
Athyris semiconcava was named by Waagen (1883).
It was recombined as Athyris (Cleiothyridina) semiconcava by Reed (1944); it was recombined as Cleiothyridina semiconcava by Angiolini (1995).
It was recombined as Athyris (Cleiothyridina) semiconcava by Reed (1944); it was recombined as Cleiothyridina semiconcava by Angiolini (1995).
Sister species lacking formal opinion data
Athyris capillata, Athyris capillata, Athyris capillata, Athyris capillata, Athyris capillata, Athyris capillata, Athyris capillata, Athyris pectinifera, Athyris pectinifera, C. angelicoides, C. atrypoides, C. atrypoides, C. australis, C. coloradensis, C. coloradoensis, C. crassicardinalis, C. deroissii, C. devonica, C. elegans, C. glabistria, C. glabristria, C. hirsuta, C. hirusta, C. humerosa, C. incrassata, C. ingens, C. kusbassica, C. lata, C. media, C. miettensis, C. nantanensis, C. offirmata, C. parvirostra, C. pecosii, C. pecossi, C. penta, C. pravirostra, C. reticulata, C. roissyi, C. rossyi, C. roysii, C. segmentata, C. squamosa, C. submabranacea, C. submabrancea, C. transversa, C. wiragullensis, C. devonica, C. pecosii
Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Athyris semiconcava Waagen p. 481 figs. Pl 41, figs 4-6 |
| 1944 | Athyris (Cleiothyridina) semiconcava Reed |
| 1980 | Athyris semiconcava Lee and Gu p. 400 figs. Pl 174, fig 15; pl 175, fig 4 |
| 1995 | Cleiothyridina semiconcava Angiolini p. 177 |
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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.
†Cleiothyridina semiconcava Waagen 1883
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 19 | 15.3 | 11.5 | 22.0 | 14.2 | 3.30 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Sakmarian to the top of the Capitanian or 293.52000 to 259.51000 Ma
Collections (53 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sakmarian | Pakistan | Cleiothyridina semiconcava (50517) | |
| Roadian | Russian Federation | Cleiothyridina semiconcava (109382) | |
| Wordian | Pakistan | Athyris semiconcava (81501 97006 125802 125808 125814 125816 125818 125819 125822 125823 125824 125825 125826 125827 125830 125831 125834 125836 125837 125838 125839 125843 125844 125846 125847 125848 125849 125851 125852 125857 125868 125871 125872 125874 125876 125878 125879) Athyris semiconcava, Athyris semiconcava (125812 125850 125853 125854 125859 125860 125869) Athyris semiconcava, Athyris semiconcava, Athyris semiconcava (125873 125875) Athyris semiconcava, Athyris semiconcava, Athyris semiconcava, Athyris semiconcava (125861) | |
| Wordian - Capitanian | Pakistan | Athyris semiconcava (127031) | |
| Capitanian | China (Nei Mongol) | Athyris semiconcava (95256) | |
| Capitanian | Pakistan | Athyris semiconcava (125863 125864) |