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Pseudorhinobatos
Taxonomy
Pseudorhinobatos was named by Marramà et al. (2020). Its type is Trygonorhina dezignii.
It was assigned to Rhinobatidae by Marramà et al. (2020).
It was assigned to Rhinobatidae by Marramà et al. (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Pseudorhinobatos Marramà et al. p. 6 |
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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 | |
|---|---|---|
| G. Marramà et al. 2020 | A rhinobatid guitarfish characterized by a wedge-shaped pectoral disc, longer (44.8% TL) than wide (38.5% TL); head length (from snout to scapulocoracoid) 29.8% TL; tail length (from pelvic- fin origin to the posteriormost tip) 56% TL; pelvic-fin length 17.8% TL; snout to pelvic-fin origin 44.8% TL: well-developed lateral skin folds extending along the lateral margins of tail; rostral cartilage about 65% of neurocranial length; no horn-like processes on nasal capsules; 42 nasal lamellae; nuchal cartilages absent; anteriormost synarcual centrum located near the midlength of the synarcual; 118–138 vertebral centra, of which 18 monospondylous, and 100–120 diplospondylous; about 20 rib pairs; propterygia extending close to the margins of the pectoral disc; first propterygial segment not reaching the level of nasal capsules; propterygial radials extending as far as nasal capsule level; 60–62 pectoral-fin radials, of which 30–32 propterygial, seven to nine mesopterygial, one to two neopterygial, 20–22 metapterygial; about 21 pelvic-fin radials; closely arranged, small dermal denticles forming a continuous and regular covering on the ventral side of the body; denticle crown smooth, rhomboidal or lozenge in shape; thorns completely covering the dorsal side of the body; thorns of globular or arrow shape with prominent ridges; teeth extremely small (up to 750 μm); crown low, not globular; lingual visor slightly convex; regular central lingual uvula with apices rounded and not enlarged; two very incipient, not divergent, lateral lingual uvulae; labial apron absent; transverse keel separating the crown into labial and lingual faces, and forming a wide obtuse angle in lingual view; enameloid surface completely smooth; holaulacorhizid root bilobed, wide, displaced lingually, not broader or higher than the crown; root lobes triangular in shape in basal view, with regular, not undulated margins; lobes separated by a marked and deep furrow exhibiting a single central nutritive foramen; two additional foramina on lingual root face; low collar on upper part of the root stem. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Carroll 1988, Wagner 2023 | |||||