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Sulcatospira asiatica
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. Its type locality is Locality 0123-1. Upper reaches of Kashkator river, northern slope of Sary-Dzhaz, which is in a Katian carbonate limestone in the Tez Formation of Kyrgyzstan.
It was recombined as Sulcatospira asiatica by Popov et al. (1999).
It was recombined as Sulcatospira asiatica by Popov et al. (1999).
Synonymy list
Year | Name and author |
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1986 | Kuzgunia asiatica Misius p. 87 figs. 87, pl. 22, figs 6–9; pl. 23, figs 1–5 |
1999 | Sulcatospira asiatica Popov et al. pp. 639-640 figs. Plate 3, figures 1–10; Text-figure 7 |
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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.
†Sulcatospira asiatica Misius 1986
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Diagnosis
Reference | Diagnosis | |
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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. |