Scarcity of fossiliferous boundary sections makes the Triassic-Jurassic biotic crisis most enigmatic five major Phanerozoic faunal turnovers.We report a bivalve-dominated level-bottom fauna from transition in southern Tibet, which is unique for two reasons: (1) it documents turnover across system without facies changes, and (2) provides paleobiological data immediate postextinction interval.In extinction pattern, selectivity against burrowing suspension feeders taxa with completely...

Well-preserved stem remains of the three crinoid species Qingyanocrinus kueichounensis (Dubatolova and Shao, 1959), Bangtoupocrinus kokeni n. gen. sp. Silesiacrinus parvus from lower Upper Anisian (Middle Triassic) Qingyan, Guizhou Province, southwestern China, are described. The former two taxa originally were described as one species, Entrochus rotiformis Koken, 1900, which is a nomen dubium. new genera established. earliest known millericrinid genera. For these Middle Triassic...

Echinoid remains from the Triassic of China are described for first time. The Middle Qingyan in Guizhou Province, south‐western China, has yielded nine taxa primary spines; seven these come lower Upper Anisian. Because all spines disarticulated, material is treated only parataxonomically. ‘Cidaris’ lineola (Bather) and wissmanni (Desor) species originally alpine Europe. bangtoupoensis sp. nov., wachangpoensis venustespinosa fangchui gu mafengpoensis nov. A so far known Qingyan....

The bivalves of early late Anisian (Middle Triassic) age from Leidapo (also Bangtoupo) in the northeastern vicinity Qingyan south-central part Guizhou Province, southwestern China (Fig. 1), are highly diverse and fairly well studied (e.g., Chen et al., 1974; Yin, Nanjing Institute Geology Palaeontology, 1976; Gan 1978; also Stiller, 2001). study these fossil assemblages began with Koken (1900) Hsu (1943). renewed this site its by Stiller (1997, 2001) al. (2001) yielded a bivalve taxon...

Abstract: Three new genera including four species of the bivalve family Mysidiellidae are described from late middle to early Anisian (Middle Triassic) deposits Qingyan, Guizhou Province, south‐west China. The taxa Leidapoconcha gigantea gen. et sp. nov., Waijiaoella elegans speciosa nov. and Qingyaniola mirabilis significantly increase known taxonomic diversity within Mysidiellidae. These findings suggest a somewhat endemic evolutionary development this small during Middle Triassic in

Abstract: The isocrinid sea lily Tyrolecrinus wugangi sp. nov. from uppermost middle to lowermost upper Anisian (lower Middle Triassic) strata of Leidapo near Qingyan, Guizhou Province, south‐west China, provides new data on the early phylogeny order Isocrinida. species is earliest unequivocal representative family Isocrinidae. It predates all other known genus that come Ladinian Rhaetian and also taxa Nevertheless, its stem fully developed type characteristic genus, with consistently...

The Middle Triassic (Anisian) Yuqing Member of the Qingyan Formation crops out in Guizhou Province, southwestern China, and consists storm-dominated inner outer shelf deposits. It contains Tethyan benthic fossils that are grouped into two fossil assemblages. allochthonous Mentzelia multi-costata-Mentzelia mentzeli assemblage is characterized by brachiopods facies. parautochthonous Posidonia wengensis assemblages, composed mainly epifaunal bivalves, dominate facies, although some species...

Well-preserved stem remains of the three crinoid species Qingyanocrinus kueichounensis (Dubatolova and Shao, 1959), Bangtoupocrinus kokeni n. gen. sp. Silesiacrinus parvus from lower Upper Anisian (Middle Triassic) Qingyan, Guizhou Province, southwestern China, are described. The former two taxa originally were described as one species, Entrochus rotiformis Koken, 1900, which is a nomen dubium. new genera established. earliest known millericrinid genera. For these Middle Triassic...

The oyster-like, dimyarian, cementing bivalve genus Protostrea CHEN in GU et al., 1976 and its type species sinensis (Hsu Hsu & CHEN, 1943) from the upper Anisian (Middle Triassic) of Qingyan Formation, Guizhou Province, south-western China, are re-described emended. Most probably is earliest representative family Dimyidae. But a peculiar dimyid because adult growth stages shell fairly large thick, resilifer rectangular, broad, shallow sometimes multiple, crura usually weak. These features...