Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications
Author
Maillet, Sebastien
Author
Milhau, Bruno
Author
Vreulx, Michel
Author
Posada, Luis-Carlos Sánchez De
text
Zootaxa
2016
4068
1
1
78
journal article
10.11646/zootaxa.4068.1.1
b9c1e3a3-e591-4b34-9f30-d6d88a230673
1175-5326
270644
80E89736-33F2-4FF5-9B01-8B7239407875
Cryptophyllus
sp. P3
(Pl. II: Fig. 14)
2013
Cryptophyllus
sp. P3; Maillet: 98, pl. XII, figs. 23–24.? 2013a
Cryptophyllus
sp. B; Maillet
et al.
: 479, pl. I, fig. 38.
Material.
9 specimens
(3 C,
6 V
).
Description.
Small carapace, asymmetric and sub-triangular in lateral view. Moult retention ostracod with at least 6 exuviae. Straight dorsal margin. Rounded umbo prominent over dorsal margin at 1/3 anterior. Anterior and posterior cardinal angles of about 150°. Free margins of the carapace well rounded, more convex posterior parts. Convexity point between anterior and ventral margins. Anterior part of the carapace higher than the posterior one. Hmax et 1/3 anterior; Lmax median; Wmax clearly dorsal and slightly anterior (umbo). Overlap of the valves unknown. Surface smooth (?). Possible slight nodes in the anterior parts of exuviae.
Discussion.
By the small size of the carapace and its general outline, these specimens might be
Cryptophyllus
sp. B of
Maillet
et al.
(2013a)
, from the Middle Devonian of the Saoura. The general bad preservation makes any identification difficult.
Occurrence.
Middle and Upper Givetian (Candás Fm, mbs C and D), Asturias (Peran-Perlora section).