Bivalvia - Cardiida - Mactridae
Alternative combination: Mactra (Spisula) markleyensis
Full reference: B. L. Clark. 1938. Fauna from the Markley Formation (Upper Eocene) on Pleasant Creek, California . Bulletin of the Geological Society of America 49:683-730
Belongs to Mactromeris according to A. J. W. Hendy 2020
See also Clark 1938 and Moore 2003
Sister taxa: Mactromeris abbotti, Mactromeris acutirostrata, Mactromeris aequilateralis, Mactromeris albaria, Mactromeris beali, Mactromeris bisculpturata, Mactromeris brevirostrata, Mactromeris capayana, Mactromeris catilliformis, Mactromeris coalingensis, Mactromeris eugenensis, Mactromeris gaviotaensis, Mactromeris hannibali, Mactromeris hemphillii, Mactromeris mercedensis, Mactromeris merriami, Mactromeris montereyana, Mactromeris mossbeachensis, Mactromeris muliniaformis, Mactromeris occidentalis, Mactromeris pittsburgensis, Mactromeris polynyma, Mactromeris ramonensis, Mactromeris rushi, Mactromeris sectoris, Mactromeris sisquocensis, Mactromeris subquadrata, Mactromeris tejonensis, Mactromeris tenuissima, Mactromeris trampasensis, Mactromeris voyi, Mactromeris weaveri
Type specimen: UCMP 30852, a shell. Its type locality is UCMP A1297, which is in an Eocene marine sandstone in the Markley Formation of California.
Distribution: found only at UCMP A1297
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.