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Caucasochasma
Taxonomy
Caucasochasma was named by Prokoviev and Sychevskaya (2018). Its type is Caucasochasma zherikhini.
It was assigned to Cetorhinidae by Prokoviev and Sychevskaya (2018).
It was assigned to Cetorhinidae by Prokoviev and Sychevskaya (2018).
Species
C. zherikhini (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Caucasochasma Prokoviev and Sychevskaya p. 128 |
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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. †Caucasochasma Prokoviev and Sychevskaya 2018
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†Caucasochasma zherikhini Prokoviev and Sychevskaya 2018
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. M. Prokoviev and E. K. Sychevskaya 2018 | Numberofvertebraeroughly200or a little more. Centra of all precaudal vertebrae some- what elongated dorso-ventrally and lack regular con- centric calcifications (“annuli”). Lower lobe of caudal fin small; length at least four times in length of upper lobe. Gill rakers up to 50 mm high under full length of fish of approximately 3 m; their apical portions mod- erately curved at base, medial process of base of mid- dle rakers with moderate length, significantly greater than width of bight, which is usually subangular; angu- larity of bight greater expressed with larger length of medial process; articular edge of medial process rounded; basal edge varies from rounded to subangu- lar; base high. Dentition unknown. |