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Galeommatidae


Specimen of Galeomma photographed in Guam, from here.


Belongs within: Heterodonta.

The Galeommatidae are a family of small bivalves. The shell is often reduced, and may be completely enclosed by the expanded mantle.

Characters (from Cox et al. 1969): Shell slightly convex or flattened, commonly transverse, irregular or gaping. Resilium ill-defined, accompanied by marginal ligament. Hinge irregular, with small to quite minute, tuberculiform cardinals, hooking or projecting at termination of flexuous somewhat obscure laterals, and crossing themselves from one valve to another around resilium, in more or less cyclodont disposition.

<==Galeommatidae
    |--Scintillona Finlay 1927 F27
    |    `--*S. zelandica (Odhner 1924) [=Spaniorinus zelandicus] F27
    |--Galeomma GW02
    |    |--G. denticulata Deshayes 1863 H09
    |    |--G. takii GR98
    |    `--G. turtoni GW02
    |--Divariscintilla GW02
    |    |--D. maoria HS01
    |    |--D. troglodytes GW02
    |    `--D. yoyo GW02
    `--Solecardia F27
         |--S. alberti (Smith 1884) [=Scintilla alberti] H09
         |--S. aurantiaca (Deshayes 1856) [=Scintilla aurantiaca] H09
         |--S. cuvieri (Deshayes 1856) [=Scintilla cuvieri] H09
         |--S. hyalina (Deshayes 1856) [=Scintilla hyalina] H09
         |--S. purpurascens (Sowerby 1874) [=Scintilla purpurascens] H09
         |--S. strangei (Deshayes 1856) [=Scintilla strangei] H09
         `--S. turgescens (Deshayes 1856) [=Scintilla turgescens] H09

*Type species of generic name indicated

REFERENCES

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.

[F27] Finlay, H. J. 1927. A further commentary on New Zealand molluscan systematics. Transactions and Proceedings of the New Zealand Institute 57: 320-485.

[GR98] Giribet, G., & C. Ribera. 1998. The position of arthropods in the animal kingdom: A search for a reliable outgroup for internal arthropod phylogeny. Molecular Phylogenetics and Evolution 9: 481-488.

[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.

[HS01] Hayward, B. W., A. B. Stephenson, M. S. Morley, W. M. Blom, H. R. Grenfell, F. J. Brook, J. L. Riley, F. Thompson & J. J. Hayward. 2001. Marine biota of Parengarenga Harbour, Northland, New Zealand. Records of the Auckland Museum 37: 45-80.

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

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