Abstract The tectonic stress field of the southwestern Ordos Basin during Late Triassic is controversial. major controversy whether was a compressional basin throughout or it transformed from an extensional into this period. We divided early to middle and late terminal periods. Two paleotectonic simulation models were constructed using finite-element software (ANSYS 10). Our results showed high...

Ornithischian dinosaurs are one of the most taxonomically diverse dinosaur clades during the Mesozoic, yet their origin and early diversification remain virtually unknown. In recent years, several new Triassic ornithischian taxa have been proposed, mostly based upon isolated teeth. New discoveries of skeletal material of some of these tooth taxa indicate that these teeth can no longer be assign...

The discovery of a new stem turtle from the Middle Jurassic (Bathonian) deposits of the Isle of Skye, Scotland, sheds new light on the early evolutionary history of Testudinata. Eileanchelys waldmani gen. et sp. nov. is known from cranial and postcranial material of several individuals and represents the most complete Middle Jurassic turtle described to date, bridging the morphological gap betw...

During the Triassic, Batrachia diverged into ancestors of frogs (Salientia) and salamanders (Caudata). Fossils Triassic batrachians are rare found only in a few outcrops, such as Middle Sakamena Formation Madagascar (Induan). Only three taxa have been described, two early Triadobatrachus Czatkiobatrachus salamander Triassurus. Here we describe right ilium, collected 1991, attributed to first ba...

In the last 500 million years, Earth's biota experienced periods of crises with extinctions on a large scale and significant turnover events, one them being Permian/Triassic boundary extinction event. The following Early Triassic was critical time marked by series biological environmental changes complex recovery pattern marine faunas ecosystems. Generally, animals plants respond to stress usin...