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Pachystrophia gotlandicus

Gastropoda - Euomphalina - Holopeidae

Taxonomy
Euomphalus gotlandicus was named by Lindström (1884). It is not a trace fossil.

It was recombined as Liomphalus gotlandicus by Chapman (1916); it was recombined as Lytospira gotlandicus by Rohr et al. (1981) and Rohr and Measures (2001); it was recombined as Pachystrophia gotlandica by Rohr et al. (2008); it was recombined as Pachystrophia gotlandicus by Spitz (1907), Rohr (1980), Wagner (1999) and Wagner (2017).

Synonyms
Synonymy list
YearName and author
1884Euomphalus gotlandicus Lindström p. 139 figs. 19-26, not 27-31
1884Ecculiomphalus circinatus Whiteaves p. 35 figs. pl. 5 f. 4, 4a-c, pl. 8 f. 5
1895Euomphalus circinatus Whiteaves p. 86
1907Pachystrophia gotlandicus Spitz p. 138
1916Liomphalus gotlandicus Chapman p. 90
1928Euomphalus gotlandicus Twenhofel p. 249
1980Pachystrophia gotlandicus Rohr p. 164
1981Lytospira gotlandicus Rohr et al.
1999Pachystrophia gotlandicus Wagner
2001Lytospira gotlandicus Rohr and Measures p. 291
2008Pachystrophia gotlandica Rohr et al. p. 604 fig. 3.7–3.10
2017Pachystrophia gotlandicus Wagner

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassEogastropoda
orderEuomphalina
superfamilyEuomphaloidea()
familyHolopeidae
genusPachystrophia
speciesgotlandicus()

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
D. M. Rohr et al. 2008Small shells with one complete volution, discoidal, openly coiled, whorl inclined oval in cross-section, weak spiral lines on base, crest at upper-outer edge, width of whorl increases about 4 times per volution.