Vertebrate Anatomy
Shark Skeleton & Jaws
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Identify the listed structures on the preserved shark skeleton (Squalus sp.)

Ceratotrichia Gill arches Hyoid arch Ischiopubic bar Meckel's cartilage Nasal capsule Palatoquadrate Pectoral fin Pelvic fin Rostrum Radial cartilages Vertebral column

Identify the following features on the shark cranium (Squalus sp.)

Antorbital process Foramen magnum Nasal capsule Occipital condyle Orbit Otic capsule Postorbital process Rostrum

Identify the following features on the Stingray Skeleton (Urobatis jamaicensis)

	Basal cartilages Caudal fin Ceratotrichia Cranium Eye Gill arches Ischiopubic bar	Nasal capsule Pectoral fin Pectoral girdle Pelvic fin Radial cartilages Spine (Venomous) Vertebral Column

The skulls and jaws of selected chondrichthyans

Spotted ratfish skull, (Subclass Holocephali, Order Chimaeriformes). Note fusion of palatoquadrate to cranium and platelike teeth.	Jaws of a Bat ray, Myliobatis californica (Clade Batoidea, Order Myliobatiformes). Durophagus.	Jaws of a skate, Dipturus sp.? (Clade Batoidea, Order Rajiformes). Durophagus & invertebrates
Jaws of an Atlantic stingray, Dasyatis sabina in posterior view (Clade Batoidea, Order Myliobatiformes). Invertebrates.	Jaws of a requiem shark, Carcharhinus sp. (Clade Selachii, Order Carcharhiniformes). A piscivore.	Jaws of a shortfin mako shark, Isurus oxyrinchus (Clade Selachii, Order Carcharhiniformes). Eats fish and squid.
Jaws of a catshark shark, probably Atelomycterus sp. (Clade Selachii, Order Lamniformes). Eats benthic invertebrates & small fishes.

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