Click on each image to see a larger version.

"Fish" GIlls
Lamprey - pouched gills	Shark - septal gills, showing gill bars & primary gill lamellae
Perch - aseptal gills showing gill rakers	Shark - gill rakers

Latex Cast of Bird Lungs & Air Sacs
Dorsal view of lungs (central) & air sacs (anterior & posterior to lungs).	Lateral view of lungs & air sacs.

Sloth Skull - hyoid, bony larynx, & tracheal cartilages
lateral view	vental view

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