Neopycnodonte cochlear (Poli, 1795)
Ostreoidea : Gryphaeidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Neopycnodonte cochlear (Poli, 1795) |
To size: To 80mm. Shell Structure: Solid but brittle. Chalky layer of shell honeycombed. Equivalve: Inequivalve, upper valve flat sitting inside deeply concave lower cemented valve. Equilateral: Inequivalve. Outline: Suboval to subcircular, upper valve rather regular, lower valve with irregular wavy margins.
Sculpture: Upper valve with concentric ridges and irregular laminar layers, lower valve similar but surface drawn out into irregular extensions especially around the attachment point. Margin: Inner margin with vermiculate (irregular ridges) chomata on the anterior dorsal edge, simple chomata on the posterior dorsal edge. Ligament: Alivincular in a shallow triangular resilifer set on a deeply cleft dorsal area. Pallial Musculature: Adductor scar subcircular, colour as shell. Colour: Buff to greenish yellow to dirty white.
Distribution & Ecology
Depth Range
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)
Additional Information & Related Species
References
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