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Araeonema novamexicanum

Gastropoda - Euomphalina - Euomphalidae

Taxonomy
Araeonema novamexicanum was named by Kues (2004). Its type specimen is UNM 13,327, a shell, and it is a 3D body fossil. Its type locality is Locality 11-M-1, La Luz Canyon, which is in a Gzhelian carbonate limestone/limestone in the Laborcita Formation of New Mexico.

It was corrected as Araeonema novamexicana by Kues (2004).

Synonymy list
YearName and author
2004Araeonema novamexicana Kues
2004Araeonema novamexicanum Kues pp. 171 - 172 figs. 9.1-9.5
2017Araeonema novamexicanum Wagner p. S7999

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassEogastropoda
orderEuomphalina
superfamilyEuomphaloidea()
familyEuomphalidae
genusAraeonema
speciesnovamexicanum

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
B. S. Kues 2004Shell small, turbiniform, relatively low spired, shallowly phaneromphalous, with a large circular aperture, thin columellar and outer lips, and ornamentation of fine, regular spiral lirae low on outer whorl surface and across base.

Shell very small (up to about 3 mm high), turbiniform, relatively low spired (mean height/width = 1.20, increasing with growth), consisting of four to five whorls, with a spiral angle of 60 to 65 degrees; protoconch of 1.5 (?) orthostrophic, unornamented, nearly planispiral whorls; teleoconch whorls moderately and evenly convex in profile between deeply impressed sutures, with nearly straight prosocline growth lines; base of body whorl gently convex, rounding evenly into outer whorl surface, with shallowly depressed umbilical region; aperture large, circular; columellar lip thin, curved along inner margin of aperture; outer lip thin, gently concave along outer margin of aperture; ornamentation of fine, regular spiral lirae low on outer whorl face and extending across whorl base.