MolluscaBase name details
Cyrena dawsoni Mayer-Eymar, 1889 †
1544974 (urn:lsid:marinespecies.org:taxname:1544974)
uncertain > taxon inquirendum
Species
fossil only
Mayer-Eymar, C. (1889). Ueber das Tongrian von Cairo (Egypten). <em>Vierteljahrsschrift der Naturforschenden Gesellschaft in Zürich.</em> 34: 191-208., available online at https://www.biodiversitylibrary.org/page/8385756
page(s): 196-197, pl. 1, fig. 3 [details]
page(s): 196-197, pl. 1, fig. 3 [details]
Type locality contained in Egypt
type locality contained in Egypt [details]
Status According to Blanckenhorn (1901), this species (among several others) is a synonym of "Mactra subtruncata Mont." [?=...
Status According to Blanckenhorn (1901), this species (among several others) is a synonym of "Mactra subtruncata Mont." [?= Spisula subtruncata (da Costa, 1778)]. However, he introduced a new variety (elongata), which would be a junior objective synonym. Probably Blanckenhorn did not intend the variety as separate taxonomic unit, but rather as a describing term. Moreover, he doubted the Oligocene age stated by Mayer-Eymar and considered the material to be Plio-Pleistocene. Revision required! [details]
MolluscaBase eds. (2025). MolluscaBase. Cyrena dawsoni Mayer-Eymar, 1889 †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1544974 on 2025-09-10
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original description
Mayer-Eymar, C. (1889). Ueber das Tongrian von Cairo (Egypten). <em>Vierteljahrsschrift der Naturforschenden Gesellschaft in Zürich.</em> 34: 191-208., available online at https://www.biodiversitylibrary.org/page/8385756
page(s): 196-197, pl. 1, fig. 3 [details]
additional source Blanckenhorn, M. (1901). Neues zur Geologie und Paläontologie Aegyptens. IV. Das Pliocän- und Quartärzeitalter in Aegypten ausschliesslich des Rothen Meergebietes. <em>Zeitschrift der Deutschen Geologischen Gesellschaft.</em> 53(3): 307-502, pl. 1-2., available online at https://www.biodiversitylibrary.org/page/43916177 [details]
page(s): 196-197, pl. 1, fig. 3 [details]
additional source Blanckenhorn, M. (1901). Neues zur Geologie und Paläontologie Aegyptens. IV. Das Pliocän- und Quartärzeitalter in Aegypten ausschliesslich des Rothen Meergebietes. <em>Zeitschrift der Deutschen Geologischen Gesellschaft.</em> 53(3): 307-502, pl. 1-2., available online at https://www.biodiversitylibrary.org/page/43916177 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Status According to Blanckenhorn (1901), this species (among several others) is a synonym of "Mactra subtruncata Mont." [?= Spisula subtruncata (da Costa, 1778)]. However, he introduced a new variety (elongata), which would be a junior objective synonym. Probably Blanckenhorn did not intend the variety as separate taxonomic unit, but rather as a describing term. Moreover, he doubted the Oligocene age stated by Mayer-Eymar and considered the material to be Plio-Pleistocene. Revision required! [details]
