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Beshtashella
Taxonomy
Beshtashella was named by Missarzhevsky and Mambetov (1981) [Missarzhevsky in Missarzhevsky & Mambetov 1981
Sepkoski's age data: Cm Atda-u Sepkoski's reference number: 1006,923]. Its type is Beshtashella tortilis.
It was assigned to Mollusca by Sepkoski (2002); to Onychochilidae by Missarzhevsky and Mambetov (1981), Missarzhevsky (1989), Bengtson et al. (1990), Elicki (1994), Elicki (1996), Parkhaev (2001) and Parkhaev (2002); and to Helcionelloida by Gubanov et al. (2004).
It was assigned to Mollusca by Sepkoski (2002); to Onychochilidae by Missarzhevsky and Mambetov (1981), Missarzhevsky (1989), Bengtson et al. (1990), Elicki (1994), Elicki (1996), Parkhaev (2001) and Parkhaev (2002); and to Helcionelloida by Gubanov et al. (2004).
Species
B. tortilis (syn. Paraformichella orientalis) (type species)
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1981 | Beshtashella Missarzhevsky and Mambetov p. 52 |
| 1983 | Paraformichella Qian and Zhang p. 88 |
| 1989 | Beshtashella Missarzhevsky p. 186 |
| 1990 | Beshtashella Bengtson et al. p. 256 |
| 1994 | Beshtashella Elicki pp. 79 - 80 figs. f. 4/3-5, 10 |
| 1996 | Beshtashella Elicki p. 148 |
| 2001 | Beshtashella Parkhaev p. 198 |
| 2002 | Beshtashella Parkhaev p. 37 |
| 2002 | Beshtashella Sepkoski |
| 2004 | Beshtashella Gubanov et al. p. 211 |
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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.
G. †Beshtashella Missarzhevsky and Mambetov 1981
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†Beshtashella tortilis Missarzhevsky and Mambetov 1981
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Invalid names: Paraformichella orientalis Qian and Zhang 1983 [synonym]
Invalid names: Paraformichella Qian and Zhang 1983 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Yu. Parkhaev 2001 | Small sinistrally coiled shells with a strongly projected spire. The whorls are open coiled, so their internal walls do not touch. Cross-section of a whorl is elliptical. |