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Gastropoda -

Pseudotylostoma was named by Ihering (1903) [Sepkoski's age data: T Dani].

It was considered a nomen dubium by Kabat (1991).

It was assigned to Neotaenioglossa by Sepkoski (2002); and to Gastropoda by Griffin and Hünicken (1994) and Squires and Saul (2004).

Species lacking formal opinion data

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Synonymy list
YearName and author
1903Pseudotylostoma Ihering
1994Pseudotylostoma Griffin and Hünicken p. 264
2002Pseudotylostoma Sepkoski, Jr.
2004Pseudotylostoma Squires and Saul p. 25

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EubilateriaAx 1987
classGastropodaCuvier 1797
genusPseudotylostomaIhering 1903

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.

M. Griffin and M. A. Hünicken 1994Shell large, fairly elongated anteroposteriorly; spire conical; last whorl moderately convex, almost completely covering previous ones; shoulders rounded; shell very thick (up to 5 mm); suture strongly abutting; ornamentation consisting of very fine growth lines only; aperture ovoid-elongated; outer lip preserved as internal mold, showing a wide and shallow colabral sulcus which on internal surface of shell would be represented by dentiform ridge; lower half of sulcus deeper than upper and crossed by four narrow transverse crenulations; umbilicus absent; columella slightly concave towards aperture, cov- ered by fairly well developed callus