Pleioptygmatidae, a new family of mitriform gastropods (Prosobranchia: Neogastropoda)
Quinn, J.F. (1989). Pleioptygmatidae, a new family of mitriform gastropods (Prosobranchia: Neogastropoda). The Nautilus 103(1): 13-19
In: The Nautilus. Bailey Matthews Shell Museum: Silver Spring. ISSN 0028-1344, more
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| Keywords |
Biology > Organism morphology > Animal morphology
Classification > Taxonomy
Neogastropoda [WoRMS]; Prosobranchia [WoRMS]
Marine/Coastal |
| Abstract |
A new family of mitriform gastropods is proposed, comprising only the genus Pleioptygma, based on examination of the foregut of P. helenae . Pleioptygma helenae is the only known Recent species of this genus, known otherwise only from species from the Neogene of the southeastern United States. The unique configuration of the foregut separates this group from the Mitridae, Costellariidae, Volutidae, and Turridae. Features characterizing Pleioptygmatidae include a proboscis introvert not connected to the head, presence of a proboscis bulb, buccal mass divorced from the proboscis, and hypertrophied rhachidian tooth. |
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