Chama

Chama pacifica, from Chamidae.

Belongs within: Heterodonta.

Chama is a genus of superficially oyster-like bivalves found primarily in tropical regions. They are normally cemented to their substrate by the left valve, though individuals may sometimes be found cemented by the right valve (Darragh & Kendrick 2008).

Characters (from Cox et al. 1969): Sculpture well-developed, ornamentation foliaceous; shell cemented to substrate by left valve throughout life; beaks prosogyrate, ligament parivincular; hinge degenerate in appearance; two large, subequal muscle scars; pallial line entire.

<==Chama Linnaeus 1758 DK08
    |--C. asperella Lamarck 1819 MG-H11
    |--C. brassica Reeve 1847 MG-H11
    |--C. broderipi Reeve 1846 BD86
    |--C. divaricata Reeve 1846 H09
    |--C. fimbriata Reeve 1847 H09
    |--C. frondosa Broderip 1835 PP78
    |--C. gryphoides GW02
    |--C. iostoma Conrad 1837 BW09
    |--C. jukesii Reeve 1847 H09
    |--C. lamellifera Tenison Woods 1877 DK08
    |--C. lazarus (Linnaeus 1758) BW09
    |--C. macerophylla GW02
    |--C. pacifica Broderip 1835 BW09
    |--C. pellucida GW02
    |--C. plinthota Cox 1927 BW09
    |--C. pulchella Reeve 1846 H09
    |--C. reflexa Reeve 1846 H09
    |--C. ruderalis Lamarck 1819 DK10
    |--C. spinosa Broderip 1835 H09
    |--C. subgigas d’Orbigny 1850 DK10
    |--C. sulphurea Reeve 1846 H09
    `--C. venosa Reeve 1847 PP78

*Type species of generic name indicated

REFERENCES

[BD86] Barash, A., & Z. Danin. 1986. Further additions to the knowledge of Indo-Pacific Mollusca in the Mediterranean Sea (Lessepsian migrants). Spixiana 9 (2): 117–141.

[BW09] Bryce, C., & C. Whisson. 2009. The macromolluscs of Mermaid (Rowley Shoals), Scott and Seringapatam Reefs, Western Australia. Records of the Western Australian Museum Supplement 77: 177–208.

Cox, L. R., N. D. Newell et al. 1969. Treatise on Invertebrate Paleontology pt N. Bivalvia vol. 2. The Geological Society of America, Inc. and The University of Kansas.

[DK08] Darragh, T. A., & G. W. Kendrick. 2008. Silicified Eocene molluscs from the Lower Murchison district, Southern Carnarvon Basin, Western Australia. Records of the Western Australian Museum 24 (3): 217–246.

[DK10] Darragh, T. A., & G. W. Kendrick. 2010. Eocene molluscs from the Merlinleigh Sandstone, Carnarvon Basin, Western Australia. Records of the Western Australian Museum 26 (1): 23–41.

[GW02] Giribet, G., & W. Wheeler. 2002. On bivalve phylogeny: a high-level analysis of the Bivalvia (Mollusca) based on combined morphology and DNA sequence data. Invertebrate Biology 121 (4): 271–324.

[H09] Hedley, C. 1909. The Marine Fauna of Queensland: Address by the President of Section D. Australasian Association for the Advancement of Science: Brisbane.

[MG-H11] McEnnulty, F. R., K. L. Gowlett-Holmes, A. Williams, F. Althaus, J. Fromont, G. C. B. Poore, T. D. O’Hara, L. Marsh, P. Kott, S. Slack-Smith, P. Alderslade & M. V. Kitahara. 2011. The deepwater megabenthic invertebrates on the western continental margin of Australia (100–1100 m depths): composition, distribution and novelty. Records of the Western Australian Museum Supplement 80: 1–191.

[PP78] Poorman, F. L., & L. H. Poorman. 1978. Additional molluscan records from Bahía de Los Angeles, Baja California Norte. Veliger 20 (4): 369–374.