Arca tumida J. De C. Sowerby, 1824 [invalid]
Original source
Sowerby (1824): 116, pl. 474 fig. 3.
Type stratum and age
“Magnesian Limestone”; Ford or Raisby Formation, Zechstein, Changhsingian, Lopingian, Permian.
Type locality
“Tunstall Hill, near Sunderland ”, Durham, United Kingdom.
Type material
Sowerby referred to “plentiful” material. The only available syntype (now lectotype by subsequent designation by Friedel et al. 2025) (NHMUK PI PL 805) is a BV steinkern. Stored in the Sowerby collections of the Natural History Museum, London.
Remarks
Recently considered as a junior synonym of Parallelodon striatus (von Schlotheim, 1820) by Friedel et al. (2025).
Publication Date: 2026-06-04