MolluscaBase name details
Megayoldia (Portlandella) R. B. Stewart, 1930 †
1826528 (urn:lsid:marinespecies.org:taxname:1826528)
unaccepted > junior subjective synonym
Subgenus
- Species Megayoldia (Portlandella) olympiana (B. L. Clark, 1925) † accepted as Portlandia olympiana (B. L. Clark, 1925) † (unaccepted > superseded combination)
marine, fresh, terrestrial
fossil only
(of Portlandia (Portlandella) R. B. Stewart, 1930 †) Stewart, R. B. (1930). Gabb's California Cretaceous and Tertiary type lamellibranchs. <em>Academy of Natural Sciences of Philadelphia, Special Publications.</em> 3: 1-314, pls 1-17., available online at https://babel.hathitrust.org/cgi/pt?id=uc1.31822011360963&seq=7
page(s): 61 [details]
page(s): 61 [details]
MolluscaBase eds. (2025). MolluscaBase. Megayoldia (Portlandella) R. B. Stewart, 1930 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1826528 on 2025-09-12
Date
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original description
(of Portlandia (Portlandella) R. B. Stewart, 1930 †) Stewart, R. B. (1930). Gabb's California Cretaceous and Tertiary type lamellibranchs. <em>Academy of Natural Sciences of Philadelphia, Special Publications.</em> 3: 1-314, pls 1-17., available online at https://babel.hathitrust.org/cgi/pt?id=uc1.31822011360963&seq=7
page(s): 61 [details]
basis of record Kafanov, A. I.; Ogasawara, K.; Marincovich, L. Jr. (2002). Checklist of the Cenozoic marine Bivalvia (Mollusca) of Northeastern Asia (Russian Far East), 1893-1999: A taxonomical summary. <em>Science reports of the Institute of Geoscience, University of Tsukuba. Section B, Geological sciences.</em> 23: 1–38.
page(s): 26 [details] Available for editors
[request]
additional source Nevesskaja, L. A.; Popov, S. V.; Goncharova, I. A.; Guzhov, A. V.; Yanin, B. T.; Polubotko, I. V.; Biakov, A. S.; Gavrilova, V. A. (2013). Phanerozoic Bivalvia of Russia and surrounding countries [Двустворчатые моллюски России и сопредельных стран в фанерозое]. <em>Trudy Paleontologicheskogo Instituta Rossiyskoy Akademii Nauk / Transactions of the Paleontological Institute.</em> 294: 1-524.
page(s): 89 [details] Available for editors [request]
source of synonymy Groves, L. T.; Squires, R. L. (2021). Checklist of California Paleogene–Neogene marine Mollusca since Keen and Bentson (1944). <em>PaleoBios.</em> 38(1): 1-360., available online at https://escholarship.org/uc/item/7t50309r
page(s): 147; note: not exiplicitly, but implied by combining the type species with Portlandia (Portlandia) [details]
page(s): 61 [details]
basis of record Kafanov, A. I.; Ogasawara, K.; Marincovich, L. Jr. (2002). Checklist of the Cenozoic marine Bivalvia (Mollusca) of Northeastern Asia (Russian Far East), 1893-1999: A taxonomical summary. <em>Science reports of the Institute of Geoscience, University of Tsukuba. Section B, Geological sciences.</em> 23: 1–38.
page(s): 26 [details] Available for editors
[request]additional source Nevesskaja, L. A.; Popov, S. V.; Goncharova, I. A.; Guzhov, A. V.; Yanin, B. T.; Polubotko, I. V.; Biakov, A. S.; Gavrilova, V. A. (2013). Phanerozoic Bivalvia of Russia and surrounding countries [Двустворчатые моллюски России и сопредельных стран в фанерозое]. <em>Trudy Paleontologicheskogo Instituta Rossiyskoy Akademii Nauk / Transactions of the Paleontological Institute.</em> 294: 1-524.
page(s): 89 [details] Available for editors
[request]source of synonymy Groves, L. T.; Squires, R. L. (2021). Checklist of California Paleogene–Neogene marine Mollusca since Keen and Bentson (1944). <em>PaleoBios.</em> 38(1): 1-360., available online at https://escholarship.org/uc/item/7t50309r
page(s): 147; note: not exiplicitly, but implied by combining the type species with Portlandia (Portlandia) [details]
