Rhodolith limestones occur in the upper part of Miocene infill Ronda Basin southern Spain. This basin was an embayment at margin Atlantic-linked Guadalquivir Basin, foreland Betic Cordillera. Messinian rhodolith crop out mesa Roman settlement Acinipo. They mostly consist trough cross-bedded rudstones, which change basinward to large-scale planar turn pass laterally and flat-bedded bryozoan ruds...

The present work focuses on palaeogeographic reconstruction of shallow-water carbonate deposition in the Outer Western Carpathian Tethys. Platform deposits are preserved only as a component turbidites and olistostromes, reconstructions these platforms based clastic material redistributed into slopes deep basins occurring among nappes. Similar were also Tethys margins. These performed using glob...

The echinoid fauna of Basab area (Aptian), northwest of Kerman, is fairly rich and diverse, represented by Pygaulidae, Acropeltidae, Emiratiidae, Toxasteridae, Holectypidae, Stomechinidae and Saleniidae. Four regular echinoid species, among which three are new, assigned to genus Tetragramma Agassiz, are described and illustrated in the present paper. The new species are Tetragramma basabensis, ...

Skeletal Mg/Ca in echinoderms is thought to be related ambient seawater Mg2+/Ca2+ ratio, which prompts the use of well-preserved fossil as paleoseawater proxies. Nonetheless, experimental studies testing effect ratio on echinoderm skeleton are limited one class, i.e., sea urchins (echinoids). Here, we investigated decreased skeletal composition (Mg/Ca ratio) a star Asterias rubens and brittle O...

In the present study, Kabir kuh Section, related to the Seymareh or Lopha Limestone member (Gurpi Formation) have been Selected. The member has yielded a rich echinoid fauna and 21 species of Echinoid belonging to 14 genera are recognized and described. The Kabir Kuh section yielded two regular echinoid taxa: Salenia nutrix and Goniopygus superbus, one holectypoid taxa: Coptodiscus noemiae, two...

Two new species of an Arbacioid echinoid, genus Goniopygus, are reported for the first time from Aptian sediments of Baghin area, Kerman, Iran. The main features of the species lie in apical disc and peristome diameter. In Goniopygus triangularis sp. nov., the periperoct is triangular in shape with three small, sunken tubercles, located alternatively adjacent to the periperoct, while Goniopygus...