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Tancrediopsis contracta
Taxonomy
Ctenodonta contracta was named by Salter (1859) [DISTRIBUTION: Ordovician; North America.]. It is a 3D body fossil. Its type locality is Wilson Loc 001. Paquette Rapids, east end of Allumette Island, which is in a Rocklandian carbonate limestone in the Bobcaygeon Formation of Canada.
It was recombined as Tellinomya contracta by Walcott (1884); it was recombined as Ctenodonta (Tancrediopsis) contracta by Beushausen (1895); it was synonymized subjectively with Tancrediopsis cuneata by McAlester (1963); it was recombined as Tancrediopsis contracta by Cossmann (1897), Cox et al. (1969) and Toni (1975).
It was recombined as Tellinomya contracta by Walcott (1884); it was recombined as Ctenodonta (Tancrediopsis) contracta by Beushausen (1895); it was synonymized subjectively with Tancrediopsis cuneata by McAlester (1963); it was recombined as Tancrediopsis contracta by Cossmann (1897), Cox et al. (1969) and Toni (1975).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1859 | Ctenodonta contracta Salter p. 37 figs. pl. 8, figs. 4, 5 |
| 1884 | Tellinomya contracta Walcott p. 76 figs. pl. 11, figs. 15, 15a. |
| 1895 | Ctenodonta (Tancrediopsis) contracta Beushausen p. 70 |
| 1897 | Tancrediopsis contracta Cossmann |
| 1969 | Tancrediopsis contracta Cox et al. p. N229 |
| 1975 | Tancrediopsis contracta Toni |
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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.
†Tancrediopsis contracta Salter 1859
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Diagnosis
No diagnoses are available