Clasa Gastropoda
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Transcript of Clasa Gastropoda
Lab.4
Clasa GASTROPODA (Cambrian-Holocen)- traiesc in medii diverse (acvatice si terestre)- singurele nevertebrate care pot fi amfibii (formele litorale care traiesc in zona flux-reflux)- forme bentonice, taratoare, saltatoare, scurmatoare, mai rar pelagice sau planctonice- forme parazite- pot fi microfage, dar majoritatea sunt ierbivore, dar si carnivore- corpul are 3 parti: cap, picior, masa viscerala
Subclasa PROSOBRANCHIATA Ordinul ARCHAEOGASTROPODA : Pleurotomaria, Euomphalus,
Trochus, Velates, Neritina (= Teodoxus) , MurchinsoniaOrdinul CAENOGASTROPODA - reuneşte Mezogastropoda şi
Neogastropoda: Turritella, Vermetus, Tympanotonos (=Cerithium), Nerinea, Campanile, Viviparus, Strombus, Natica, Ancilla, Murex, Fusinus (=Fusus), Conus, Loxonema, Melanopsis, Buccinum, Terebelum
Subclasa OPISTOBRANCHIA Ordinul PLEUROCOELA : Trochacteon, Acteonella, Clio
Subclasa PULMONATA (forme terestre)Ordinul STYLOMMATOPHORA : Clausilia, Helix, Pupa Ordinul BASOMMATOPHORA : Physa, Valenciennius,
Planorbis, Limnea
Clasa CRICOCONARIDA (Ordovician-Devonian) Ordinul Tentaculitida: Tentaculites Ordinul Dacryoconarida
Clasa CEPHALOPODA (Cambrian sup.-Holocen)- piciorul a fost transformat in brate anterioare situate in jurul capului- cele mai evoluate moluste, in fauna actuala cuprind cele mai mari nevertebrate: nautilus, sepia, calmari, caracatita
Subclasa ENDOCERATOIDEA : Endoceras
Subclasa BACTRITOIDEA : Bactrites