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Schachriomonia parva

Rhynchonellata - Atrypida - Atrypinidae

Taxonomy
Zygospira parva was named by Rukavishnikova (1956). Its type specimen is IGNA 64/1369 (conjoined valves) and is a 3D body fossil.

It was recombined as Zygospira (Kuzgunia) parva by Klenina (1984); it was recombined as Schachriomonia parva by Popov et al. (1999), Popov and Cocks (2006) and Popov and Cocks (2014).

Synonyms
Synonymy list
YearName and author
1956Zygospira parva Rukavishnikova p. 162 figs. pl. 5, figs 14–16
1984Zygospira (Kuzgunia) parva Klenina p. 114 figs. pl. 11, figs 6–12
1984Zygospira (Kuzgunia) bakanasensis Klenina p. 116 figs. pl. 11, figs 5, 15
1999Schachriomonia parva Popov et al. pp. 635 - 638 figs. pl. 2, figs 1–9, text-figs 5, 6
2006Schachriomonia parva Popov and Cocks p. 280 figs. text-fig. 6I, K.
2014Schachriomonia parva Popov and Cocks p. 749 figs. 19M, 25S–W

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderAtrypidaRzhonsnitskaya 1960
suborderAtrypidinaMoore 1952
superfamilyAtrypoideaGill 1871
familyAtrypinidaeMcEwan 1939
subfamilySpirigerininaeRzhonsnitskaya 1974
genusSchachriomoniaNikiforova 1978
speciesparva(Rukavishnikova 1956)

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.

†Schachriomonia parva Rukavishnikova 1956
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Invalid names: Schachriomonia bakanasensis Klenina 1984 [synonym]
Diagnosis
ReferenceDiagnosis
L.E. Popov et al. 1999 Schachriomonia with slightly ventribiconvex, sub-circular to slightly transverse sub-oval shell, about 97 per cent. as long as wide and 55 per cent. as thick as long; anterior commissure weakly uniplicate to near rectimarginate; ventral valve moderately and evenly convex; sulcus very narrow and shallow, originating anterior to mid-valve; dorsal valve moderately and evenly convex with a shallow V-shaped sulcus in the umbonal area and a low, inconspicuous median fold originating between the anterior margin and mid-valve; radial ornament of 14–21 costae with one rib in the sulcus and two in the median fold; spiralia with short jugal process and five to seven whorls.