This paper reports a Lower Triassic inorganic carbon isotope profile from the North Pingdingshan Section in Chaohu, Anhui Province, China, which was situated in a deep part of the Lower Yangtze carbonate ramp. The δ(¹³C)excursion shows two periods from the Permian-Triassic boundary to the lower Spat...

The presence of a single Otoceras species (O. boreale),morphologically very variable,at the base of the Nekuchan Formation in Verkhoyansk,we believe,is to be obvious. Some morphological evidence leaves no doubt that two described morphs of O. boreale are a strictly corresponding sexual dimorphic pai...

Late Olenekian assemblages in the western Panthalassa have been recovered from bedded radiolarian chert sequences of an accretionary complex,the Ashio belt. These faunas are documented and considered in terms of radiolarian diversity and faunal turnover during the latest Permian to Middle Triassic t...

This paper proposes a scheme for the definition of the Lower Triassic Induan Olenekian boundary (IOB) based on investigation of sections in Chaohu,Anhui Province,China as well as data accumulated from other studies elsewhere. The conodont Neospathodus waageni is suggested as the index fossil of the ...

A selection of evidence,including a carbon isotopic excursion,iridium anomaly,fullerenes (C₆₀ and C₇₀) with trapped noble gases,microspherules and shocked quartz,is discussed in this paper. All the evidence in hand favors the hypothesis that the PTB event was probably related to an extraterrestrial ...

After the establishment of the global stratotype section and point (GSSP) of the Permian Triassic boundary (PTB), the definition of the accessory section and point (ASP) of the terrestrial Permian Triassic boundary (TPTB) is now on the agenda. However, all good TPTB sections so far known have the fo...

The Zhejue Section is an excellent terrestrial Permian Triassic boundary (TPTB) section not only for its convenient accessibility and good outcrop, but also for its abundant fossils. In addition, there are two claystone beds that were formed by events across the Permian Triassic boundary (PTB) at th...

Abundant ichthyoid remains, conodonts and holothurians sclerites were recovered near the Permian/Triassic boundary from a section south of Isfahan. Recovered ichthyoid remains include shark micro teeth and scales. The ichthyolith material is similar to a Fasanian ichthyolith from the Zakazane area i...

Meishan Section D in Changxing County, Zhejiang Province, China has been selected as the global stratotype of the Permian Triassic boundary and various studies have been done at the boundary, but the gas chromatographic mass spectrographic analysis of alkane biomarkers has not been investigated. Thi...

On the basis of researches over several years on biostratigraphy of Changhsingian at Meishan Section D in Changxing County, the abundant materials were accumulated. This paper studies the ecostratigraphy and establishes 7 community zones (CZ), in ascending order, Sinoplatysomus-Geinitzina-Clarkina s...

Based on the study of lithology, sedimentology and paleontology at the Permian Triassic boundary in Liaotian, Northwestern Jiangxi Province, the sequence stratigraphy and depositional environments across the boundary are reconstructed. The top part of the Upper Permian Changxing Formation is compose...

According to the latest International Chronostratigraphic Scheme (ICS, 2000), the Permian in the Middle Lower Yangtze region of South China can be divided into three series and nine stages relevant to the traditional six stages of South China. From Assellian to Changxingian of Permian, 44 Ma in age ...