Palaeobates and Squalus

Palaeobates angustissimus (Meyer 1849; Early Triassic, NMC 9980, originally Strophodus angustissimus Agassiz 1834, 1m long) is a Squalus ancestor.

Squalus acanthias (Linneaus 1758) is the extant spiny dogfish, a shark than nests at the base of the angel shark + eagle shark clade. A tiny spine precedes each dorsal fin. The rostrum is elongate and the jaw is underslung. The lateral gill slits are set low, anterior to the pectoral fins.

Agassiz L 1843. Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel xxxii-188

Meyer H v 1849. Fische, Crustaceen, Echinodermen und andere Versteinerungen aus dem Muschelkalk Oberschlesiens. Palaeontographica, 1: 216-242.

Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.

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