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Topic: Cephalaspidea

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	Elena M. Chaban. Some materials for revision of opisthobranchs of the family Retusidae (Mollusca: Cephalaspidea) (Site not responding. Last check: 2007-11-06)
		The taxonomy of Cephalaspidea is based on alimentary canal characteristics.
		A preliminary survey of the Cephalaspidea (Opisthobranchia) of Hong Kong and adjacent waters.
		Minichev, Y.S. On fauna, ecology and taxonomy of Retusidae (Opisthobranchia Cephalaspidea) of the Possyet Bay of the Japan sea.
	www.zin.ru /annrep/2000/04.html (1737 words)

	Opisthobranchia (Mollusca, Gastropoda) - more than just slimy slugs. Shell reduction and its implications on defence ... (Site not responding. Last check: 2007-11-06)
		She discussed the gizzard in Cephalaspidea, kleptoplasty in Sacoglossa, kleptocnides in Aeolidoidea, symbiosis with unicellular algae in Phyllodesmium Ehrenberg, 1831 and mantle dermal formations in Chromodorididae.
		Furthermore, the Cephalaspidea (Acteonoidea excluded) is not monophyletic due to the inclusion of the Anaspidea.
		Another evolutionary trait for defence, and discussed as a prerequisite for shell reduction at least in sacoglossans [13], is the uptake or de novo synthesis of secondary metabolites that are toxic to possible predators [5,46].
	bmc.ub.uni-potsdam.de /cgi-bin/show.pl?1742-9994-2-3 (6778 words)

	The Sea Slug Forum - Cephalaspidea from Madeira
		Thompson (1976) said that Retusa truncatula is the same as Retusa mammillata (sin.) and Cylichnina nitidula (sin.) is the same as Retusa umbilicata.
		I'd like to know from people working on the order Cephalaspidea if they agree with this opinion or if they have new information about this species that could change this point of view.
		Malaquias, M., 1999 (Feb 2) Cephalaspidea from Madeira.
	www.seaslugforum.net /display.cfm?id=529 (172 words)

	BieSOn - Comparative histology and ultrastructure of the nidamental glands and egg masses of the Opisthobranchia ... (Site not responding. Last check: 2007-11-06)
		Comparative histology and ultrastructure of the nidamental glands and egg masses of the Opisthobranchia (Mollusca, Gastropoda) : a functional and evolutionary approach
		In the present study the nidamental glands of 32 species of opisthobranchs, belonging to the "Cephalaspidea s.
		Generally speaking, the structure of the nidamental glands is rather uniform in the investigated species: all species possess three distinct glandular parts, namely an albumen or a capsule gland, a membrane gland and a mucous gland.
	bieson.ub.uni-bielefeld.de /volltexte/2002/58 (505 words)

	Larval Development and Metamorphosis in Pleurobranchaea maculata, With a Review of Development in the Notaspidea ...
		is observed in the Cephalaspidea, Ascoglossa, Anaspidea, and
		Timing is generalized to ontogenetic stage (embryo, larva, and adult) for Cephalaspidea (light gray bars), Notaspidea (white bars), and Nudibranchia (dark gray bars).
		Different patterns within a bar indicate differences in the developmental process underlying a particular trait; for example, shell growth occurs at the mantle fold in early stages and the mantle gland in later stages, and shell loss occurs through dissolution (some pleurobranchids) or being cast off (Nudibranchia).
	www.biolbull.org /cgi/content/full/205/2/121 (4273 words)

	NUDIBRANCHS: MARINE SLUGS WITH VERVE
		The more primitive forms have well-developed shells; the majority have no shell at all as adults, but retain a larval shell that will be lost when the animal metamorphoses from juvenile to adult.
		Order Cephalaspidea are known as the bubble shells; some of them have a very thin, bulbous shell, yet others have only a small internal remnant or no shell at all.
		The dorsal surface of the head consists of a flap of skin (called a head shield, from which its scientific name Cephalaspidea is derived) that extends back up over its body.
	slugsite.us /bow/nudi_han.htm (3183 words)

	Bulloidea - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-06)
		The superfamily Bulloidea (Lamarck, 1801) consists of herbivorous marine snails belonging to the headshield slugs of the suborder Cephalaspidea and the order Opisthobranchia.
		They have large, ovate external shells that offer enough cover to accommodate the whole snail when retracting.
		Length : 60 mm (largest shell of the Cephalaspidea)
	en.wikipedia.org /wiki/Bulloidea (868 words)

	SeaSlugsOpisthobranchs
		Opisthobranch means "gills behind" where most of these gastropods have their gills and anus situated (as opposed to the prosobranch snails with their anus and gills up front).
		Below: one off of San Diego, intertidal egg masses (resemble tangled spaghetti, can be of many colors) and large individual left high (and moist) with a minus-tide event.
		Order Cephalaspidea, the Headshield Slugs: Worldwide, often have shells (often reduced, internal), often with operculums.
	www.wetwebmedia.com /seaslugsopisthobranchs.htm (523 words)

	California Diving News - California Marine Life (Site not responding. Last check: 2007-11-06)
		Its shell is not as barrel shaped as some other barrel snails and may, at first glance, appear to be a snazzy type of olive snail.
		But its body has the distinctive head-shield of all members of the opisthobranch order to which it belongs, the Cephalaspidea.
		The striped barrel snail is the only California representative of the Family Actoenidae.
	www.saintbrendan.com /cdnapril00/marine4.html (704 words)

	Representative Publications
		Description of a new species of Haminaea, Haminaea callidegenita (Mollusca: Opisthobranchia), with a comparison with two other Haminaea species found in the northeast Pacific.
		Developmental variability (benthic and pelagic) in Haminaea callidegenita (Opisthobranchia: Cephalaspidea) is influenced by egg mass jelly.
		Embryology and larval development of Haminaea vesicula Gould (Opisthobranchia: Cephalaspidea).
	ace.acadiau.ca /Science/Biol/GGIBSON/publications.htm (268 words)

	Amazon.com: Books: Downtonian and Devonian Vertebrates of Spitsbergen: Family Cephalaspidea, Det Norske ... (Site not responding. Last check: 2007-11-06)
		Amazon.com: Books: Downtonian and Devonian Vertebrates of Spitsbergen: Family Cephalaspidea, Det Norske Videnskaps-Akademii Oslo, Skrifter m Svalbard G Nordishav Et, N (The History of paleontology)
		Publisher: Learn how customers can search inside this book.
		Downtonian and Devonian Vertebrates of Spitsbergen: Family Cephalaspidea, Det Norske Videnskaps-Akademii Oslo, Skrifter m Svalbard G Nordishav Et, N (The History of paleontology) (Hardcover)
	www.amazon.com /exec/obidos/tg/detail/-/0405127464?v=glance (363 words)

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