Provenance of the Upper Triassic Nariwa Group, Southwest Japan.

Taxonomy of Shuvosaurus, a Late Triassic Archosaur from the Chinle Group, American Southwest

The distinctive, edentulous archosaur Shuvosaurus inexpectatus Chatterjee, 1993, was named based on a skull, whereas the postcrania of the same taxon were named Chatterjeea elegans Long and Murry, 1995. Effigia okeeffeae Nesbitt and Norell, 2006, is the name for the associated skull and postcranium of Shuvosaurus and Chatterjeea. Therefore, only one generic name, Shuvosaurus (= Chatterjeea, = E...

Algae (Dasycladales) from the Upper Triassic Nayband Formation (northeast Iran)

Dasycladales are relatively abundant in the bedded limestones of the Bidestan and Howz-e Khan members of the Late Triassic Nayband Formation in central Iran. In a locality south of the town of Naybandan (northwest of Dig-e Rostam), several Rhaetian dasycladacean algae were found in thin sections. The following taxa are described: Diplopora phanerospora Pia, Naybandoporella rhaetica nov. gen. no...

Interpreting the Upper Triassic Carbon Isotope Record

Calcareous paleosols of the Upper Triassic Chinle Group, Four Corners region, southwestern United States: Climatic implications

Paleosols are prominent features of the Upper Triassic Chinle Group. The oldest (Carnian-age) formations of the Chinle Group (Zuni Mountains and Shinarump Formations) contain kaolinitic paleosols that display gley features but generally lack calcretes. Paleosols of the (Upper Carnian) Blue Mesa Member of the Petrifi ed Forest Formation are mostly mature Alfi sols that have distinctive horizonat...

Ichnotaxonomic analysis of trace fossil assemblages of the Upper Triassic Nayband Formation, Tabas Block, Central Iran

This study includes a thorough systematic analysis of the ichnological record in the Late Triassic siliciclastic Nayband Formation of the Tabas Block, Central Iran. A total of 48 ichnospecies representing 28 ichnogenera are identified and their preservation aspects, paleoecological aspects, producers and behavioral aspects are discussed. The ichnofauna includes Arenicolites, Asterosoma, Bergaue...