The Squalea includes a huge
assortment of sharks, including the rays, sawfishes, guitarfishes and
skates. Members of the Squalea can be distinguished in a) lacking an anal
fin AND having just five pairs of gill slits or b) having an anal fin AND
having six or seven pairs of gill slits.
Literature: Click on book to order
a copy.
Bigelow, H., and Wm. Schroeder. 1957. A study of
the sharks of the suborder Squaloidea. Bulletin of the Museum of
Comparative Zoology 117(1): 1-150.
Sprackland,
Robert. 1999. Key to the Sharks and Rays of the World. Young Forest
Company, Belmont, CA.
