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Cobracephalus angulosus
Taxonomy
Cobracephalus angulosus was named by Whidborne (1897). It is a 3D body fossil. It is the type species of Cobracephalus.
Synonymy list
| Year | Name and author |
|---|---|
| 1897 | Cobracephalus angulosus Whidborne figs. Pl. XIII, figs. 9, 9a |
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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.
†Cobracephalus angulosus Whidborne 1897
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. F. Whidborne 1897 | "Description. Shell small, convex, angulated, very transverse and oblique. Umbo prominent, elevated but flattened, much incurved, arching forward, acute, situated at or about the anterior third of the length, and apparently extending slightly above the hinge-line. Hinge-line equal to the greatest length of shell. Contour of surface vertically convex ; horizontally angulated; being (1) flat on a narrow area bounded by rounded angles, which run from the umbo obliquely backward to inferior margin ; (2) in front of this, deeply perpendicular, then oblique at the base of front wing, then flat on front wing, and lastly sigmoid at the antero-superior corner; (3) behind the central band, first perpendicular, then oblique, then angulated by a line from behind umbo to the postero inferior corner, and then oblique and concave, forming a broad hind wing. Anterior wing large, trapezoidal, pointed in front, bounded by an angulated margin. Anterior margin apparently nearly perpendicular below the wing. Inferior margin very short and straight. Posterior margin oblique, convex, angulated. Surface covered by very numerous and crowded, parallel but unequal, sharp, elevated, concentric threads or stride, separated by deep concavities, which are rather wider than the threads, and crossed by numerous indistinct radiations." |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available