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Stenotheca

Helcionelloida - Helcionellida - Stenothecidae

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 is the type genus of Stenothecidae.

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), Bouchet et al. (2005); and to Stenothecidae by Runnegar and Jell (1980), Vendrasco et al. (2011), Ebbestad et al. (2024).

Entered
by J. Sepkoski on 2003-01-23; modified by P. Wagner on 2013-10-27

Synonymy list
YearName and author
1872Stenotheca Hicks
1976Stenotheca Runnegar and Jell p. 117
1980Stenotheca Runnegar and Jell p. 111
1992Stenotheca Bengtson p. 1027
1996Stenotheca Landing and Bartowski p. 753
2001Stenotheca Parkhaev p. 182
2002Stenotheca Parkhaev p. 36
2002Stenotheca Sepkoski
2004Stenotheca Parkhaev p. 599
2005Stenotheca Bouchet et al. p. 111
2011Stenotheca Vendrasco et al. pp. 11A:20-21
2024Stenotheca Ebbestad et al. p. 1879

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classHelcionelloidaPeel 1991
orderHelcionellida
familyStenothecidae
genusStenotheca

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
ReferenceDiagnosis
P. Yu. Parkhaev 2001The 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. 2011Highly 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.