Chiloscyllium, Ginglymostoma and Stegostoma

Chiloscyllium punctatum (Müller and Henle 1838; Steggl, Abed-Navandi and Kriwet 2022, 1m) is the extant brown banded bamboo shark, here nesting basal to nurse sharks (below). This nocturnal shark has barbels. Traditionally bamboo sharks are considered members of the Orectolobiformes (nurse sharks + whale sharks).

Stegostoma tigrinum (originally Squalus varius Seba 1758; Forster 1781; 2.5m) is the extant zebra shark. In the LRT it is the most primitive fish with marginal teeth, premaxilla, maxilla and dentary. It feeds on small prey hiding in holes and reef crevices. This bottom dweller has a long, straight tail. The zebra shark is oviparous.

Ginglymostoma cirrum (Bonaterre 1788; Müller and Henle 1837) is the extant nurse shark, a lethargic, bottom dweller. According to Wikipedia, "Members of this genus have the ability to suck in water in order to remove snails from their shells in a manner that can be described as 'vacuum-like'.

Bonaterre PJ 1788. Tableau encyclopédique et méthodique des trois règnes de la nature ..., Ichthyologie. Panckoucke, Paris 1788.

Forster JR 1781. Indische Zoologie oder systematische Beschreibungen seltener und unbekannter Thiere aus Indien, mit 15 illuminirten Kupfertafeln erläutert. Nebst einer kurzen vorläufigen Abhandlung über den Umfang von Indien und die Beschaffenheit des Klima, des Bodens und des Meeres daselbst, und einem Anhange, darin ein kurzes Verzeichniss der Thiere in Indien mitgetheilt wird. / Zoologia indica selecta [...]. Praemittitur de finibus et indole aeris, soli, marisque indici brevis lucubratio. Seqvitur ad calcem brevis enumeratio animalium Indiae. Gebauer, Halle, 4+iv+42 pp., 15 pls. [German and Latin text; based on Pennant, 1769; second edition in 1795].

Motta PJ and Wilga CD 1999. Anatomy of the Feeding Apparatus of the Nurse Shark, Ginglymostoma cirratum. Journal of Morphology 24:33–60.

Müller J and Henle FGJ 1838. On the generic characters of cartilaginous fishes, with descriptions of new genera.

Staggl MA, Abed-Navandi D and Kriwet J 2022. Cranial morphology of the orectolobiform shark, Chiloscyllium punctatum Müller & Henle, 1838. Vertebrate Zoology
72 311–370. https://doi.org/10.3897/vz.72.e84732

wiki/Ginglymostoma
wiki/Zebra_shark - Stegostoma
wiki/Chriloscyllium