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Topic: Squalidae

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Squaliformes

Dogfish

Shark

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H2O

Pale Rider

NAD

Oolong

	Shark Evolution
		In response the elasmobranchs began to radiate again and during the early Triassic a shark appeared in the fossil record that was similar enough in appearance to modern day sharks to be considered one of the first of the "modern sharks".
		Palaeospinax was morphologically similar to the dogfish of the family squalidae.
		It had a calcified sectioned vertebral column instead of a continuous notochord, its two dorsal fins had supportive leading edge spines, and most notably it had the under slung mouth of a modern shark.
	www.elasmodiver.com /elasmobranch_evolution.htm (2187 words)

	Bibliography of the Mediterranean Shark Research Group
		Re-description of the external morphology of Somniosus rostratus (Risso, 1826), with special reference to its squamation and cutaneous sensory organs, and aspects of both their functional morphology (Pisces, Selachii, Squalidae).
		Evidence of Somniosus rostratus (Risso, 1826) from the foot-hills of the Northern Apennines (Parma Province, Italy) (Chondrichthyes, Squalidae).
		KABASAKAL H. Observations on Etmopterus spinax (Pisces: Squalidae), from the north-eastern Aegean Sea.
	freeweb.supereva.com /alessandrodemaddalena/bibliography.html (5600 words)

	California Academy of Sciences - Research - Ornithology and Mammalogy (Site not responding. Last check: 2007-11-01)
		Long, D.J. First account of the Birdbeak Dogfish shark, Deania calcea, (Chondrichthyes; Squalidae) from the northern coast of Peru.
		Long, D.J. The combtooth dogfish Centroscyllium nigrum, (Chondrichthyes: Squalidae) from the Pacific sub-Antarctic of Chile.
		The ectoparasitic barnacle Anelasma (Thoracica: Lepadomorpha) on the shark Centroscyllium nigrum (Chondrichthyes: Squalidae) from the Pacific sub-Antarctic.
	www.calacademy.org /research/bmammals/dlongcv.html (2253 words)

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