scholarly journals Post-hatchling cranial ontogeny in the Early Triassic diapsid reptile Proterosuchus fergusi

2015 ◽  
Vol 226 (5) ◽  
pp. 387-402 ◽  
Author(s):  
Martín D. Ezcurra ◽  
Richard J. Butler
Keyword(s):  
Early Triassic ◽  
Cranial Ontogeny

scholarly journals Cranial Ontogeny of the Early Triassic Basal CynodontGalesaurus planiceps

2016 ◽  
Vol 300 (2) ◽  
pp. 353-381 ◽  
Author(s):  
Sandra C. Jasinoski ◽  
Fernando Abdala
Keyword(s):  
Early Triassic ◽  
Cranial Ontogeny

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

EARLY CORDILLERAN ARC DEVELOPMENT RECORDED IN LATE PERMIAN AND EARLY TRIASSIC PLUTONS OF THE NORTHERN MOJAVE DESERT, CALIFORNIA

2016 ◽  
Author(s):  
M. Robinson Cecil ◽  
◽  
Mary Ann Ferrer ◽  
Nancy R. Riggs ◽  
Kathleen M. Marsaglia
Keyword(s):  
Mojave Desert ◽  
Early Triassic ◽  
Late Permian

FAST RADIATION OF EARLY TRIASSIC MARINE REPTILES IN THE WAKE OF THE END-PERMIAN EXTINCTION

2017 ◽  
Author(s):  
Da-yong Jiang ◽  
◽  
Ryosuke Motani ◽  
Andrea Tintori ◽  
Zuoyu Sun ◽  
...  
Keyword(s):  
Early Triassic ◽  
Marine Reptiles ◽  
Permian Extinction

QUANTITATIVE CONSTRAINTS ON END-PERMIAN AND EARLY TRIASSIC OCEANIC ANOXIA USING HIGH-RESOLUTION δ238U RECORDS

2017 ◽  
Author(s):  
Feifei Zhang ◽  
◽  
Thomas J. Algeo ◽  
Stephen Romaniello ◽  
Ariel D. Anbar
Keyword(s):  
High Resolution ◽  
Early Triassic ◽  
Oceanic Anoxia

EXTREMELY HIGH RESOLUTION XRF CORE SCANNING REVEALS THE EARLY TRIASSIC EVOLUTION OF THE WESTERN PANGAEAN MARGIN

2020 ◽  
Author(s):  
Shane D. Schoepfer ◽  
◽  
Charles M. Henderson ◽  
Thomas F. Moslow ◽  
Chen Shen
Keyword(s):  
High Resolution ◽  
Early Triassic ◽  
Xrf Core Scanning
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