Argyrotheca cf. plicata (de Morgan, 1915 )

Dulai, Alfréd, 2016, Sporadic Pliocene and Pleistocene brachiopods in Naturalis Biodiversity Center (Leiden, the Netherlands): Records from the Mediterranean, and the North Sea Basin, Fragmenta Palaeontologica Hungarica 33, pp. 65-98 : 91

Argyrotheca cf. plicata (de Morgan, 1915)

( Figs 61–64)

Material – Cricqueville-en-Bessin (1 pedicle valve).

Remarks – Unfortunately, the available material is very limited, contains only a pedicle valve. It is very similar to DE MORGAN’s (1915) species, which was described from the Middle Miocene (Langhian) of Pontlevoy as a rare new species. This species was also listed by PACAUD (2014) among brachiopod type specimens of the Natural History Museum in Paris, without any additional information. The main difference between them that de Morgan’s specimen has rounded outline, while the Cricqueville-en-Bessin specimen is more subtrigonal. The other characters are the same (few weak and rounded ribs, lack of tubercles along the internal margin of the valve, short and low median septum in the pedicle valve). Reasonable interpretation of this form requires much more available material.