MolluscaBase - Portlandia (Megayoldia) gratiosa (Yokoyama, 1923) †

MolluscaBase name details

Portlandia (Megayoldia) gratiosa (Yokoyama, 1923) †

AphiaID

1767193 (urn:lsid:marinespecies.org:taxname:1767193)

Classification

Status

uncertain > unassessed

Rank

Species

Parent

Portlandia (Megayoldia) A. E. Verrill & K. J. Bush, 1897 accepted as Megayoldia A. E. Verrill & K. J. Bush, 1897

Original name

Yoldia gratiosa Yokoyama, 1923 †

Synonymised names

Yoldia gratiosa Yokoyama, 1923 † · unaccepted > superseded combination

Environment

marine, ~~brackish~~, ~~fresh~~, ~~terrestrial~~

Fossil range

fossil only

Original description

(of Yoldia gratiosa Yokoyama, 1923 †) Yokoyama, M. (1923). On some fossil Mollusca from the Neogene of Izumo. Japanese Journal of Geology and Geography, 2(1): 1-9, pls. 1, 2.
page(s): 8 [details]

Taxonomic citation

MolluscaBase eds. (2025). MolluscaBase. Portlandia (Megayoldia) gratiosa (Yokoyama, 1923) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1767193 on 2025-09-11

Taxonomic edit history

Date

action

2024-08-25 03:05:59Z

created

Marshall, Bruce

Licensing

The webpage text is licensed under a Creative Commons Attribution 4.0 License

[taxonomic tree]

Sources (1)

original description (of Yoldia gratiosa Yokoyama, 1923 †) Yokoyama, M. (1923). On some fossil Mollusca from the Neogene of Izumo. Japanese Journal of Geology and Geography, 2(1): 1-9, pls. 1, 2.
page(s): 8 [details]