Family Cucullaeidae - cucullaeid ark shells
|
Order |
: |
|||
Class |
: |
Bivalvia |
||
No. of Genera in Ref. |
: |
|||
No. of Species in Ref. |
: |
|||
Environment |
: |
Fresh : No |
Brackish : No |
Marine : No |
||
Aquarium |
: |
|||
First Fossil Record |
: |
|||
Remark |
: |
Shell inflated, inequilateral, slightly inequivalve. Umbones subcentral, on top of a trigonal cardinal area with chevron-shaped grooves and external ligament. Hinge elongate, straightish, with a series of transverse teeth, and subhorizontal teeth at both ends. Two subequal adductor muscle scars, inner margin of posterior scar on a projecting shelf. Pallial line without a sinus (Ref. 348). |
||
Etymology |
: |
|||
Division |
: |
|||
Reproductive guild |
: |
|||
Typical activity level |
: |
|||
Main Ref. |
: |
|||
Coordinator |
: |