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Stenotheca

Helcionelloida - Helcionellida - Stenothecidae

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, Jr.
2004Stenotheca Parkhaev p. 599
2005Stenotheca Bouchet et al. p. 111
2011Stenotheca Vendrasco et al. pp. 11A:20-21

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
RankNameAuthor
phylumMollusca
classHelcionelloidaPeel 1991
orderHelcionellida
superfamilyYochelcionelloidea
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.

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.