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Biangularia frechi
Taxonomy
Pleurotomaria (Biangularia) frechi was named by Spitz (1907) [Pleurotomaria (Biangularia) Frechi]. It is a 3D body fossil. Its type locality is Light Gray Riffskalk, Judenköpf, im Westen des Coglians, Carnic Alps, which is in a Pragian carbonate limestone in the Grau Riffkalk Formation of Austria. It is the type species of Pleurotomaria (Biangularia).
It was recombined as Biangularia frechi by Knight (1941) and Wagner (2023).
It was recombined as Biangularia frechi by Knight (1941) and Wagner (2023).
Synonymy list
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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.
†Biangularia frechi Spitz 1907
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Diagnosis
Reference | Diagnosis | |
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J. B. Knight 1941 | High-spired, many-whorled, curiously compressed gastropods of moderate size with a selenizone; the spire laterally compressed and the whole twisted in a clockwise direction; whorl profile gently arched between sutures; sutures shallow; nucleus unknown; outer lip seemingly with a broad, shallow sinus that culminates a little below mid-whorl in what is probably but not certainly a short slit giving rise to a selenizone, the margin o f the lip gently oblique backwards from the upper suture to the selenizone with gentle forward convexity, below the selenizone gently oblique forward; selenizone moderately broad, gently convex, and bordered by revolving striae; ornamentation other than lines of growth lacking; shell of moderate thickness, its structure unknown. |
Measurements
No measurements are available
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Source: f = family, o = order | |||||
References: Bambach et al. 2007, Hendy 2009 |