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Patellites concentricus

Taxonomy
Patellites concentricus was named by Wahlenberg (1821). Its type specimen is SM A31846 and is a 3D body fossil.

It was recombined as Orbiculoidea concentrica by Bergström (1968), Mergl (2012) and Cocks (2014).

Synonymy list
YearName and author
1821Patellites concentricus Wahlenberg p. 75
1968Orbiculoidea concentrica Bergström p. 7 figs. pl. 2 f. 7-9
2012Orbiculoidea concentrica Mergl p. 38
2014Orbiculoidea concentrica Cocks p. 16 fig. 3C

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RankNameAuthor
genusPatellitesWahlenberg 1821
RankNameAuthor
speciesconcentricus

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
M. Mergl 2012Orbiculoidea concentrica (WAHLENBERG, 1818) described from the Dalmanitina Beds (Hirnantian) of Wästergötland, Sweden by Bergström (1968) differs from A. squamosus by a longer pedicle track, coarser rugellate ornamentation and a larger shell size.