Molluska. Cephalopoda. Tetrabranchiata et Dibranchiata
Molluska. Cephalopoda. Tetrabranchiata et Dibranchiata
Description
Phylum Mollusca
Class Cephalopoda
Marine Tetrabranchiata.
1) Nautilus. Planispiral, external, exogastric shell, with perforated septa through which a cord of living tissue called a siphuncle goes, which extends from the visceral mass. At the anterior end a circle of tentacles are covered by a hood.
Dibranchiata. 4) Spirula, living in deep waters, with an internal coiled shell (5).
Argonauta (Octopoda). 6, 7) Male with a modified arm as an intromittent organ, called a hectocotylus, closed in a bag and evaginated.
8) Female with its coiled nidamental shell.
10) Spermatophore.
People
Nitsche, Hinrich (Author)
Leuckart, Rudolf (Author)
Michelon, Nicola (Digitiser)
Castelli, Stefano (Digitiser)
Biblioteca Vallisneri - Università di Padova (Digitiser)
Format
image/jpeg (927.06 kB)
wallchart
Subject
• Zoologia, Molluschi, Cefalopodi, Tavola didattica
Object languages:
GermanSources
• Cassettiera B - 1
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