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Coelospira dichotoma

Rhynchonellata - Athyridida - Anoplothecidae

Taxonomy
Leptocoelia dichotoma was named by Hall (1859).

It was recombined as Anoplotheca dichotoma by Weller (1903); it was recombined as Coelospira dichotoma by Clarke (1900) and Boucot and Johnson (1967).

Synonymy list
YearName and author
1859Leptocoelia dichotoma Hall p. 452 figs. pl. 103b f. 3a-c
1900Coelospira dichotoma Clarke p. 42 figs. pl. 5 f. 27-32
1903Anoplotheca dichotoma Weller p. 358 figs. pl. 49 f. 3-6
1967Coelospira dichotoma Boucot and Johnson pp. 1236 - 1237 figs. pl. 164 f. 1-18

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderAthyrididaBoucot et al. 1964
superfamilyAnoplothecoideaSchuchert 1894
familyAnoplothecidaeSchuchert 1894
subfamilyCoelospirinaeHall and Clarke 1894
genusCoelospiraHall 1863
speciesdichotoma()

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
A. J. Boucot and J. G. Johnson 1967Large for the genus; flatly concavo- convex, ventral flanks may be concave; costae numerous, bifurcating anteriorly, tending to disintegrate at periphery of large shells, medial costae only faintly differentiated; ventral diductors elongate, not elevated on a platform.