Title |
High Diversity in Cretaceous Ichthyosaurs from Europe Prior to Their Extinction
|
---|---|
Published in |
PLOS ONE, January 2014
|
DOI | 10.1371/journal.pone.0084709 |
Pubmed ID | |
Authors |
Valentin Fischer, Nathalie Bardet, Myette Guiomar, Pascal Godefroit |
Abstract |
Ichthyosaurs are reptiles that inhabited the marine realm during most of the Mesozoic. Their Cretaceous representatives have traditionally been considered as the last survivors of a group declining since the Jurassic. Recently, however, an unexpected diversity has been described in Upper Jurassic-Lower Cretaceous deposits, but is widely spread across time and space, giving small clues on the adaptive potential and ecosystem control of the last ichthyosaurs. The famous but little studied English Gault Formation and 'greensands' deposits (the Upper Greensand Formation and the Cambridge Greensand Member of the Lower Chalk Formation) offer an unprecedented opportunity to investigate this topic, containing thousands of ichthyosaur remains spanning the Early-Late Cretaceous boundary. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 3 | 27% |
United Kingdom | 2 | 18% |
Indonesia | 1 | 9% |
Brazil | 1 | 9% |
Colombia | 1 | 9% |
Spain | 1 | 9% |
Unknown | 2 | 18% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 8 | 73% |
Scientists | 3 | 27% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Chile | 1 | 2% |
Germany | 1 | 2% |
Canada | 1 | 2% |
Unknown | 60 | 95% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 14 | 22% |
Student > Master | 10 | 16% |
Student > Bachelor | 8 | 13% |
Student > Ph. D. Student | 6 | 10% |
Other | 5 | 8% |
Other | 10 | 16% |
Unknown | 10 | 16% |
Readers by discipline | Count | As % |
---|---|---|
Earth and Planetary Sciences | 31 | 49% |
Agricultural and Biological Sciences | 15 | 24% |
Biochemistry, Genetics and Molecular Biology | 1 | 2% |
Nursing and Health Professions | 1 | 2% |
Computer Science | 1 | 2% |
Other | 3 | 5% |
Unknown | 11 | 17% |