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Rhectomyax Stewart, 1930 (Bivalvia: Kelliidae): a familial reassignment

Published online by Cambridge University Press:  02 September 2016

L. R. Saul
L. R. Saul*
Affiliation:
Earth Sciences Division, Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, California 90007
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Extract

The genus Rhectomyax was proposed by Stewart (1930) for Asaphis undulatus Gabb, 1864, a small bivalve described from fossils collected in a mine shaft sunk between BeaPs Bar and the Half Way House, not far from Texas Flat and near the Placer-Sacramento County line, California. The age of this mine shaft collection remains imprecise, but it is Late Cretaceous and probably from within the Campanian. Although Stewart's description of Rhectomyax follows his discussion of Asaphis Modeer, 1793 (Stewart, 1930, p. 285), and is not set off from other genera included by him in the “Garidae,” he ended his description with, 4T have been unable to recognize the affinities of this shell.” Rhectomyax is the oldest genus included by Keen (1969, p. N633) in the family Psammobiidae.

Type
Taxonomic Notes
Information
Journal of Paleontology , Volume 62 , Issue 3 , May 1988 , pp. 481
Copyright
Copyright © The Paleontological Society 

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References

Gabb, W. M. 1864. Description of the Cretaceous fossils. California Geological Survey, Palaeontology, 1:57–243.Google Scholar
Keen, A. M. 1969. Superfamily Tellinacea de Blainville, 1814, p. N613–N643. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Pt. N, Mollusca 6, Bivalvia 2. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Stewart, R. B. 1930. Gabb's California Cretaceous and Tertiary type lamellibranchs. Academy of Natural Sciences, Philadelphia, Special Publication 3, 314 p.Google Scholar