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Caucombrus histiopterygius
Taxonomy
Caucombrus histiopterygius was named by Bannikov (2020). Its type specimen is PIN 5419/14 and is a 3D body fossil. It is the type species of Caucombrus.
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Caucombrus histiopterygius Bannikov p. 61 |
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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.
†Caucombrus histiopterygius Bannikov 2020
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. F. Bannikov 2020 | Body elongated, fusiform; its depth considerably shorter then head length. Caudal pedun- cle short and slender. Head pointed anteriorly; its length is 2.5–3.9 times in standard body length (SL). Neurocranium width, more than twice shorter than its length. Supraoccipital crest relatively low. Eyes rela- tively small, orbit diameter not exceed 23% of head length. Mouth large, terminal, not protrusile; upper jaw protrudes forward. Premaxillary ascending pro- cess fused with articular process, extended at base; its anterodorsal edge oblique. Lower jaw articulation located under posterior quarter of orbit. Jaw teeth rel- atively widely spaced, rather large, pointed, uniserial, mostly compressed laterally; several anterior teeth curved and conical. Preopercle slightly curved, with short lower branch and even free edge (in larvae with spines). Vertebrae 52–54, of which 24–26 abdominal and 28 caudal; about half of posterior abdominal ver- tebrae bear parapophyses strongly elongated posteri- orly. Centra of vertebrae of caudal peduncle gradually shortened to terminal vertebra and lack bony lateral keel. Vertebral spines very slender, several anterior neural spines somewhat widened medially. Ribs rela- tively long, strongly inclined posteriorly. Dorsal fins connected at base, first dorsal fin extended and very high anteriorly, sail-like. First dorsal fin with ca. 22 very slender spines; second dorsal fin with small spine and about 11 rather short soft rays; dorsal finlets about 11. Anal fin with two small spines and 10 soft rays, ventral finlets about 11. Anal fin shifted posteriorly relative to second dorsal-fin origin. Pectoral fins moderately long. Pelvic fins short, attached directly before pecto- rals. Caudal fin deeply-forked, with 17 principal rays and numerous upper and lower procurrent rays. Hypurostegy strongly developed. Scales very small, cycloid. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Kiessling 2004, Hendy et al. 2009, Carroll 1988 | |||||
Collections
No collection or age range data are available