Ricerca
Risultati della ricerca
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Journal article
Evolution's missing chapter
Fraser, Nicholas C
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Journal article
A new Neocalamites (Sphenophyta) with prickles and attached cones from the Upper Triassic of China.
Remains of the extinct sphenophyte (horsetail) Neocalamites are most widespread in the Middle–Upper Triassic and are typically represented by stem and leaf fragments. Here we report on spectacular new finds of Neocalamites from the Late Triassic Yangcaogou Formation in Liaoning Province, China that include bedding surfaces dominated by nearly complete...Zan, Shuqin ; Axsmith, Brian J ; Escapa, Ignacio ; Fraser, Nicholas C ; Fengxiang, Liu …
Sphenophyta, Horsetails, Neocalamites, Liaoning, Triassic, and China
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Journal article
Leehermania prorova, the earliest staphyliniform beetle, from the late Triassic of Virginia (Coleoptera: Staphylinidae).
The Staphylinidae contain over 57,000 described species, thus comprising one of the largest families in all Insecta. Leehermania prorova Chatzimanolis, Grimaldi, and Engel, new genus and species, is described, which is the earliest staphylinid and the oldest definitive polyphagan beetle. The new species is based on a series of well-preserved...Chatzimanolis, S ; Grimaldi, D A ; Engel, M S ; Fraser, Nicholas C
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Journal article
New information on the protorosaurian reptile Macrocnemus fuyuanensis, Li et al., 2007, from the Middle/Upper Triassic of Yunnan, China
A new specimen of the protorosaur Macrocnemus fuyuanensis, from the Zhuganpo Member of the Falang Formation at Fuyuan (Yunnan Province, southwestern China), is described and compared with Macrocnemus bassanii. The new specimen is the first in the genus Macrocnemus that clearly shows details of the preorbital region of the skull....Jiang, Da-Yong ; Rieppel, Olivier ; Fraser, Nicholas C ; Motani, Ryosuke ; Hao, Wei-Cheng …
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Journal article
Arthur Cruickshank [obituary]
Fraser, Nicholas C
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Journal article
The beginning of the 'Age of Dinosaurs': a brief overview of terrestrial biotic changes during the Triassic
The first appearance of dinosaurs during the early Late Triassic coincided with marked faunal changes in terrestrial ecosystems. Most of the major groups of extant tetrapods (or their proximate sister-taxa), including mammaliaforms, crocodyliform archosaurs, lepidosaurs and turtles, also first appeared in the fossil record during the Late Triassic. On the...Fraser, Nicholas C ; Sues, H D
plants, tetrapods, extinctions, insects, and Pangaea
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Journal article
Use of fine-scale stratigraphy and chemostratigraphy to evaluate conditions of deposition and preservation of a Triassic lagerstätte, south-central Virginia
The rich, fossiliferous Triassic sediments exposed in the Virginia Solite Quarry include a 34-mm-thick “insect layer” that is notable for detailed preservation of soft-bodied invertebrate and vertebrate remains. We describe this unique Konservat-Lagerstätte and use sedimentologic and geochemical analyses to interpret the environmental conditions necessary to preserve such delicate fossils....Fraser, Nicholas C ; Liutkus, C M ; Beard, J S ; Ragland, P C
North America, Lacustrine, Newark Supergroup, Danville-Dan River Basin, rift basin, and insects
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Journal article
Tanystropheus cf. T. longobardicus from the Early Late Triassic of Guizhou Province, Southwestern China
The protorosaur Tanystropheus longobardicus is well known from the Middle Triassic of alpine Europe. It has been described on the basis of a number of specimens that apparently range from juvenile to adult. The largest specimens have a total body length of approximately 3 m. Here we report on the...Fraser, Nicholas C ; Rieppel, Olivier ; Jiang, Da-Yong ; Hao, Wei-Cheng ; Motani, Ryosuke …
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Book
Triassic life on land: the great transition
The Triassic period is generally viewed as the beginning of the Age of Dinosaurs. For paleontologists, however, it also marks the rise of the world's first modern land ecosystems. Over the past three decades, extensive, worldwide fieldwork has led to the discovery of many new species of Triassic animals and...Sues, Hans-Dieter ; Fraser, Nicholas C