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Anematina proutana

Gastropoda - Euomphalina - Elasmonematidae

Taxonomy
Holopea proutana was named by Hall (1856). It is a 3D body fossil. Its type locality is Spergen Hill, near railroad station at Harristown, southeast of Salem, which is in a Meramecian carbonate limestone in the Salem Formation of Indiana.

It was recombined as Holopea (Callonema) proutana by Whitfield (1882); it was recombined as Strophostylus (Anematina) proutana by Knight (1933); it was recombined as Anematina proutana by Knight (1941), Blodgett and Johnson (1992) and Wagner (2017).

Synonymy list
YearName and author
1856Holopea proutana Hall
1882Holopea (Callonema) proutana Whitfield p. 72 figs. pl. 8 f. 33-34
1906Holopea proutana Cumings p. 1342 figs. pl. 25 f. 33-34
1915Holopea proutana Girty p. 190
1929Holopea proutana Bell p. 177 figs. pl. 31 f. 7, 7a-8
1933Strophostylus (Anematina) proutana Knight p. 36 figs. pl. 8 f. 2
1941Anematina proutana Knight pp. 32 - 33 figs. Plate 52, figures 4a-b
1992Anematina proutana Blodgett and Johnson p. 121
2017Anematina proutana Wagner p. 3839

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassEogastropoda
orderEuomphalina
superfamilyEuomphaloidea()
familyElasmonematidaeKnight 1956
genusAnematina()
speciesproutana()

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
J. B. Knight 1941Small, subtrochiform, minutely phaneromphalous gastropods with gently oblique outer lip; whorl profile moderately arched between sutures; sutures only moderately deep; nucleus simple, dextral, not set off from the succeeding whorls; base somewhat flatly rounded, minutely phaneromphalous; columellar lip gently arcuate, thin, its upper part slightly reflexed about the minute umbilicus; parietal inductura thin; outer lip thin, gently oblique backwards from the upper suture, very slightly convex forward; ornamentation very faint lines of growth only; shell thin, its structure unknown; color pattern two revolving dark bands. The holotype measures about 10 mm. in height, 6 mm. in width, and has a pleural angle of about 45 degrees.