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Shenacanthus
Taxonomy
Shenacanthus was named by Zhu et al. (2022). Its type is Shenacanthus vermiformis.
It was assigned to Chondrichthyes by Zhu et al. (2022).
It was assigned to Chondrichthyes by Zhu et al. (2022).
Species
S. vermiformis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2022 | Shenacanthus Zhu et al. p. 954 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Y. Zhu et al. 2022 | Small chondrichthyan, approximately 22 mm from the rostrum to the anal fin. Fusiform body shape; small cranium (~3.5 mm from the rostrum to the shoulder girdle) with blunt rostrum; denti- tion absent; branchial region posteriorly positioned in relation to the cranium; branchiostegal and hyoidean plates absent, shoulder girdle covered in large dermal plates both dorsally and ventrally, two median dorsal plates, the anterior one smaller and oblate, the posterior one larger and teardrop-shaped, with vermiform ornament; paddle-like pectoral fins lacking fin spine; Anal fin also lacking fin spine. Small, diamond-shaped scales. Small scutes or dermal plates with linear orna- ment along the dorsal and ventral midlines. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Carroll 1988, Wagner 2023 | |||||