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Sulcatospira asiatica

Rhynchonellata - Atrypida - Atrypinidae

Taxonomy
Kuzgunia asiatica was named by Misius (1986) [Was proposed as the type of the genus in Misius' 1969 dissertation thesis; however, it was published after the (sub)genus was published by Klenina in 1984. ]. Its type specimen is GIK 1292/5 (complete shell) and is a 3D body fossil.

It was recombined as Sulcatospira asiatica by Popov et al. (1999).

Synonymy list
YearName and author
1986Kuzgunia asiatica Misius
1999Sulcatospira asiatica Popov et al. pp. 639-640 figs. Plate 3, figures 1–10; Text-figure 7

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
RankNameAuthor
classRhynchonellataWilliams et al. 1996
orderAtrypidaRzhonsnitskaya 1960
suborderAtrypidinaMoore 1952
superfamilyAtrypoideaGill 1871
familyAtrypinidaeMcEwan 1939
subfamilySpirigerininaeRzhonsnitskaya 1974
genusSulcatospira
speciesasiatica(Misius 1986)

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
L.E. Popov et al. 1999 Sulcatospira with slightly dorsibiconvex shell; outline rounded pentagonal, about 91 per cent. as long as wide and 64 per cent. as thick as long; anterior commissure uniplicate; ventral valve moderately convex with posteriorly directed, slightly curved beak and open delthyrium; sulcus originates at the umbonal area, sharpened laterally by strong, angular costae and deepened anterior to mid-length; tongue trapezoidal, strongly inclined to commissural plane and about 64 per cent. as wide as maximum shell width; dorsal valve moderately convex with shallow sulcus in the umbonal area, reversed as a high median fold with steep slopes anterior to mid-valve; radial ornament costate with up to ten ribs on flanks; costellate in the fold and sulcus with one primary rib in fold, two ribs in sulcus, and normally one or two secondary ribs bifurcating anterior to mid-length; accentuated median rib usually present in the ventral valve; crura subparallel, anteriorly directed; jugal process long, strongly thickened near the junction with spiralial base; spiralia with up to seven whorls.