2011
DOI: 10.1126/science.1198467
|View full text |Cite|
|
Sign up to set email alerts
|

Abstract: Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary Eoraptor as a basal sauropodomorph, divide the faunal record of the Ischigualasto Formation with biozones, and bracket the formation with (40)Ar/(39)Ar ages. Some 230 million years ago in the Late Triassic (mid Carnian), the earliest dinosaurs were the dominant terrestrial carnivo… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

2
334
0
29

Year Published

2011
2011
2019
2019

Publication Types

Select...
5
2

Relationship

0
7

Authors

Journals

citations
Cited by 288 publications
(365 citation statements)
references
References 22 publications
2
334
0
29
Order By: Relevance
“…The plant community (23 species) was dominated by Corystospermaceae 9 and was interpreted as a subtropical riparian sclerophyll forest accompanied by herbaceous-shrubby understory 27 . This was undoubtedly an important evolutionary hotbed that facilitated the speciation of new and novel forms of archosaur (that is, all dinosaur linages), the extinction of others (that is, the archosauromorph Scaphonix), and the preservation of many species of palaeovertebrates together with an outstanding macroflora, consisting of cuticles, tree trunks and roots 13,16 . The enhanced potential for organic preservation in the Ischigualasto Formation (Valle de la Luna Member) was coincident with an increase in humidity, evidenced by changes in the palaeosols, fluvial architecture, in the palaeovertebrate preservation and the appearance of the entire range of palaeofloristic remains, and the quality and abundance of animal and plant remains compared with underlying units 13,15,16 .…”
Section: Discussionmentioning
confidence: 99%
See 3 more Smart Citations
“…The plant community (23 species) was dominated by Corystospermaceae 9 and was interpreted as a subtropical riparian sclerophyll forest accompanied by herbaceous-shrubby understory 27 . This was undoubtedly an important evolutionary hotbed that facilitated the speciation of new and novel forms of archosaur (that is, all dinosaur linages), the extinction of others (that is, the archosauromorph Scaphonix), and the preservation of many species of palaeovertebrates together with an outstanding macroflora, consisting of cuticles, tree trunks and roots 13,16 . The enhanced potential for organic preservation in the Ischigualasto Formation (Valle de la Luna Member) was coincident with an increase in humidity, evidenced by changes in the palaeosols, fluvial architecture, in the palaeovertebrate preservation and the appearance of the entire range of palaeofloristic remains, and the quality and abundance of animal and plant remains compared with underlying units 13,15,16 .…”
Section: Discussionmentioning
confidence: 99%
“…This was undoubtedly an important evolutionary hotbed that facilitated the speciation of new and novel forms of archosaur (that is, all dinosaur linages), the extinction of others (that is, the archosauromorph Scaphonix), and the preservation of many species of palaeovertebrates together with an outstanding macroflora, consisting of cuticles, tree trunks and roots 13,16 . The enhanced potential for organic preservation in the Ischigualasto Formation (Valle de la Luna Member) was coincident with an increase in humidity, evidenced by changes in the palaeosols, fluvial architecture, in the palaeovertebrate preservation and the appearance of the entire range of palaeofloristic remains, and the quality and abundance of animal and plant remains compared with underlying units 13,15,16 . This local change appears to coincide with a humid climatic pulse recognized extensively around the Tethys and in southwestern North America during the Carnian as a consequence of the extreme continental monsoonal regime fostered by the Pangean supercontinent [28][29][30] .…”
Section: Discussionmentioning
confidence: 99%
See 2 more Smart Citations
“…La Formación Ischigualasto, es una de las últimas unidades que conforman el relleno de esta cuenca, datada en su base y en su techo en 231, 4 (Rogers et al, 1993;Renne et al, 2010) y 225 Ma, respectivamente (Martínez et al, 2011).…”
Section: Contexto Geológicounclassified