Aulacothyris resupinata (J. Sowerby, 1816)

Vörös, A., 2014, Early Jurassic brachiopods from diverse localities of northern Anatolia (Turkey), Fragmenta Palaeontologica Hungarica 31, pp. 7-49 : 39-40

Aulacothyris resupinata (J. Sowerby, 1816)

(Figs 98–100)

* 1816 Terebratula resupinata . – J. SOWERBY, Mineral Conchology II, p. 116, pl. CL, figs. 3, 4.

1851 Terebratula resupinata, Sow. – DAVIDSON, Oolitic and Liasic, p. 31, pl. IV, figs 1–5.

1959 a Aulacothyris cf. A. resupinata (J. Sowerby) – AGER, Turkey, p. 1025, pl. 129, fig. 5.

1974 Aulacothyris resupinata (Sowerby 1816) – DELANCE, Zeilleridés, p. 317, pl. 6, figs 14–26.

1975 Aulacothyris resupinata (Sowerby 1818) – COMAS-RENGIFO & GOY, Ribarredonda, p. 320, pl. 2, figs 5, 6.

1990 Aulacothyris resupinata (J. Sowerby, 1816) – TCHOUMATCHENCO, Brach. jur. Kotel II, p. 35, text-figs 21, 22, pl. XI, figs 6–10.

2010 Aulacothyris resupinata (Sowerby, 1818) – ALMÉRAS et al., Massif Armoricain, p. 62, text-fig. 21.

v 2014 Aulacothyris resupinata (J. Sowerby, 1816) – VÖRÖS, Yakacik, p. 245, pl. II, fig. 10.

Material – One rather well-preserved specimen from Günüviran (Bilecik area), loose from Upper Sinemurian to Lower Pliensbachian interval .

Measurements –

L W T Ch

INV 2014.124. 11.3 10.3 4.9 2.7 Remarks – A. resupinata is a frequently illustrated and well-known European zeilleriid species and it was thoroughly discussed by DELANCE(1974) and ALMÉRAS et al. (2010). On the basis of its elongated oval outline, erect beak with well-developed beak ridges and the shallow but long dorsal sulcus, starting very posteriorly, our specimen was easy to identify with this species. A. resupinata differs from A. anatolica (Vadász, 1913) by its narrower sulcus and by its oval outline, in contrast to the subpentagonal outline of A. anatolica , where the greatest width is near the anterior end of the shell. A. resupinata occurs frequently in the Pliensbachian of the NW-European region, but was recorded also in North Africa, the Balkans (Kotel) and Turkey; therefore, it tends to be cosmopolitan in distribution.