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Seseloidia

Strophomenata - Productida - Richthofeniidae

Synonymy list
YearName and author
1993Seseloidia Grant p. 10
2000Seseloidia Williams et al. p. 612
2002Seseloisi Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderProductidaSarycheva and Sokolskaya 1959
suborderLyttoniidina
superfamilyRichthofenioidea
familyRichthofeniidae
genusSeseloidia

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
R. E. Grant 1993conical, ventral valve walls thick, vesicular, with rough exterior; supporting spines few, scattered randomly; apertural spines absent, dorsal valve pustulose, resting on prominent shelf recessed within ventral aperture; hinge narrowed by proximal swellings of ventral shelf.

Ventral interior containing low front-to-back swelling on floor; mycoelidium long, reaching from floor to just below hinge, containing high median septum arising from floor of myocoelidium and not reaching valve wall except at valve floor; muscle marks visible within myocoelidium; apical parts of high shells filled by vesicular tissue.