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Stenotheca
Taxonomy
Stenotheca was named by Hicks (1872) [Sepkoski's age data: Cm Atda Cm uMid-l Sepkoski's reference number: 11,110,1006; Salter in Hicks 1872.]. Its type is Stenotheca cornucopia.
It was assigned to Procarinariidae by Runnegar and Jell (1976); to Cyrtonellida by Bengtson (1992); to Helcionellidae by Landing and Bartowski (1996); to Helcionelloida by Sepkoski (2002); to Stenothecinae by Parkhaev (2001), Parkhaev (2002), Parkhaev (2004) and Bouchet et al. (2005); and to Stenothecidae by Runnegar and Jell (1980) and Vendrasco et al. (2011).
It was assigned to Procarinariidae by Runnegar and Jell (1976); to Cyrtonellida by Bengtson (1992); to Helcionellidae by Landing and Bartowski (1996); to Helcionelloida by Sepkoski (2002); to Stenothecinae by Parkhaev (2001), Parkhaev (2002), Parkhaev (2004) and Bouchet et al. (2005); and to Stenothecidae by Runnegar and Jell (1980) and Vendrasco et al. (2011).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1872 | Stenotheca Hicks |
| 1976 | Stenotheca Runnegar and Jell p. 117 |
| 1980 | Stenotheca Runnegar and Jell p. 111 |
| 1992 | Stenotheca Bengtson p. 1027 |
| 1996 | Stenotheca Landing and Bartowski p. 753 |
| 2001 | Stenotheca Parkhaev p. 182 |
| 2002 | Stenotheca Parkhaev p. 36 |
| 2002 | Stenotheca Sepkoski |
| 2004 | Stenotheca Parkhaev p. 599 |
| 2005 | Stenotheca Bouchet et al. p. 111 |
| 2011 | Stenotheca Vendrasco et al. pp. 11A:20-21 |
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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. †Stenotheca Hicks 1872
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†Stenotheca acutacosta Walcott 1890
†Stenotheca angusta Cobbold 1935
†Stenotheca clotho Walcott 1912
†Stenotheca cornucopia Hicks 1872
†Stenotheca drepanoida He et al. 1984
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Invalid names: Mellopegma absida Li and Ding 1996 [synonym]
†Stenotheca higginsi Peel 2021
†Stenotheca lata Cobbold 1935
†Stenotheca norvegica Resser 1938
†Stenotheca pojetai Runnegar and Jell 1976
†Stenotheca tepee Runnegar and Jell 1976
†Stenotheca transbaikalica Parkhaev 2004
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Yu. Parkhaev 2001 | The shell is cap-shaped, evenly expanding from the apex to the aperture, strongly laterally compressed, relatively high. The apex is pointed, hooked and displaced posteriorly. The aperture is extremely narrow, oval, its lateral margins are slightly convex. The partial train lies below the apex. Ornamentation is represented by concentric ribs. | |
| M. J. Vendrasco et al. 2011 | Highly laterally compressed, tall univalve with a sub-triangular lateral profile, slight coiling (about 1/8 to just over 1/4 one whorl), concave sub-apical margin (embayment) that borders an angular to flat sub-apical shelf. |