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Solenomya (Janeia) trapezoides

Bivalvia - Solemyida - Solemyidae

Taxonomy
Solenomya (Janeia) trapezoides was named by Meek (1874) [Solenomya sp. Meek & Worthen 1873. pl. 27 f. 1a-b]. Its type specimen is USNM 36315, a shell, and it is a 3D body fossil.

It was recombined as Solenomya trapezoides by Beede and Rogers (1899), Beede (1900) and Bailey (2011); it was recombined as Solemya trapezoides by Hoare (1961), Hoare (1961) and Kues et al. (2002); it was recombined as Acharax (Nacrosolemya) trapezoides by Bailey (2021).

Sister species lacking formal opinion data
Janeia bokkeveldensis, S. hoeli

Synonymy list
YearName and author
1874Solenomya (Janeia) trapezoides Meek p. 582
1899Solenomya trapezoides Beede and Rogers p. 132 figs. pl. 34 f. 2a-b
1900Solenomya trapezoides Beede pp. 159-160 figs. pl. 21 f. 2a-b
1961Solemya trapezoides Hoare p. 96 figs. pl. 12, fig. 14
2002Solemya trapezoides Kues et al. p. 129 fig. 4Q
2011Solenomya trapezoides Bailey pp. 31 - 35 figs. Text-fig. 3; Pl. 5, Figs 3, 1-6
2021Acharax (Nacrosolemya) trapezoides Bailey p. 29

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
RankNameAuthor
subclassProtobranchia(Pelseneer 1889)
superorderNuculiformiiDall 1889
orderSolemyidaNewell 1965
superfamilySolemyoideaAdams and Adams 1857
familySolemyidaeAdams and Adams 1857
genusSolenomyaChildren 1823
subgenusJaneia
speciestrapezoides

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.

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Diagnosis
ReferenceDiagnosis
B. S. Kues et al. 2002The valve surface lacks ornamentation except for irregular, comarginal wrinkles. Although incomplete, the unusual size as well as the shape and proportions of this valve leave little doubt that it is S. trapezoides, a species thoroughly discussed by Pojeta (1988) and described from Virgilian strata of central New Mexico by Kues (1992).