CLASSE CEPHALOPODA PDF

gracieteoliveira [licensed for non-commercial use only] / Classe Cephalopoda. Cuvier, G. Second Mémoire sur l’organisation et les rapports des animaux à sang blanc, dans lequel on traite de la structure des Mollusques et de leur. Mollusks are divided into seven classes with most species residing in gastropoda . The class Cephalopoda is a remarkable group of mollusks.

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Palps and digestive diverticula described above. Acta Pelaeontologica Polonica49 4: With about half shell volume, placed as dorsal continuation of foot; strongly compressed by pedal musculature Fig. There is a pair of retractor muscles fm that can be used to retract and enfold the distal half of the foot. Bering Strait to Cape Horn. Would you also like to submit a review for this item?

WoRMS – World Register of Marine Species – Cephalopoda

Rejection of Carboniferous Quasidentalium Shimansky,from the phylum Mollusca. Longitudinal pedal muscles becoming thicker in anterior pedal half, forming two distinguishable thick layers, a dorsal layer covered by integument, another ventral layer running laterally, forming lateral walls of visceral mass, in direction of bifurcation of longitudinal muscles Fig.

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Moluscos del Caribe colombiano. The remaining Conchifera have kidneys concentrated in the sub-pericardial region forming a solid triangular chamber, which appears as a notable synapomorphy. Please create a new list with a new name; move some cephaloopoda to a new or existing list; or delete some items. Seashells of Southern Florida.

Cephalopoda

The paleontology of rostroconch molluscs and the early history of the phylum Mollusca. You already recently rated this item. Both crustacean groups have a pair of adductor muscles.

Nucula obliqua Lamarck,OD. Molecular evidence on the evolution of the Bivalvia. Feeding and particle-sorting in Yoldia ensifera Bivalvia: Cerebral commissure with about half shell maximum cephalopodz.

Anus a relative wide papilla Fig.

Deed Sea Researchsuppl. The lateral expansions of the foot in scaphopods have been named crenulated fringe and anchoring organ Steiner, a, cephaopoda, Its distal edge secretes the ligament.

Pair of pedal ganglia Figs. Transverse muscles through surrounding visceral sac: This feature is convergently found in solemyids, which possess a reduced digestive tube because of the symbiotic mode of life; some species have even lost their digestive tubes Reid, Softly widening tax of increase about 0.

Fernando de Noronha Archipelago.

Palps are almost atrophied in Solemyidae and even absent in some species. The visceral organs are not protected by a muscular integument, and neither transverse muscles are present. The expression of an engrailed protein during embryonic shell formation of the tusk-shell, Antalis entalis Mollusca, Scaphopoda.

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Classes do Filo Mullusca

The obtained cladogram is: Circulatory and excretory systems Fig. O stroenii zhaberno-pal’pogo apparata Solemya velumzharaktere pitaniia Solemyidae i ikh polozhenii v sostave Protobranchia Bivalvia. Steinerfor example, stated “contractile, burrowing foot, with longitudinal muscles associated with pedal wall, transverse muscles present, lateral epipodial lobes as anchoring organ” as cephalopodq of Diasoma as Loboconcha.

Both longitudinal muscles trifurcating in middle level of animal’s body; external branches thin, splaying along anterior pallial wall; middle branches splaying in foot base as longitudinal layer of foot retractors Fig.

This layer is present in basal taxa of most conchiferan classes, notoriously in Gastropoda, Cephalopoda and Bivalvia; and mostly lost in higher taxa Watabe, The circulation of sea water in the mantle cavity of Dentalium entails.