| Title |
New Ophthalmosaurid Ichthyosaurs from the European Lower Cretaceous Demonstrate Extensive Ichthyosaur Survival across the Jurassic–Cretaceous Boundary
|
|---|---|
| Published in |
PLOS ONE, January 2012
|
| DOI | 10.1371/journal.pone.0029234 |
| Pubmed ID | |
| Authors |
Valentin Fischer, Michael W. Maisch, Darren Naish, Ralf Kosma, Jeff Liston, Ulrich Joger, Fritz J. Krüger, Judith Pardo Pérez, Jessica Tainsh, Robert M. Appleby |
| Abstract |
Ichthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one during the latest Triassic, one at the Jurassic-Cretaceous boundary (JCB), and one (resulting in total extinction) at the Cenomanian-Turonian boundary. The JCB was believed to eradicate most of the peculiar morphotypes found in the Late Jurassic, in favor of apparently less specialized forms in the Cretaceous. However, the record of ichthyosaurs from the Berriasian-Barremian interval is extremely limited, and the effects of the end-Jurassic extinction event on ichthyosaurs remains poorly understood. |
X Demographics
The data shown below were collected from the profiles of 22 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 2 | 9% |
| United States | 1 | 5% |
| France | 1 | 5% |
| Thailand | 1 | 5% |
| New Zealand | 1 | 5% |
| Chile | 1 | 5% |
| Argentina | 1 | 5% |
| Japan | 1 | 5% |
| Unknown | 13 | 59% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 14 | 64% |
| Scientists | 6 | 27% |
| Science communicators (journalists, bloggers, editors) | 2 | 9% |
Mendeley readers
The data shown below were compiled from readership statistics for 93 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 2 | 2% |
| United States | 2 | 2% |
| United Kingdom | 2 | 2% |
| Chile | 1 | 1% |
| Japan | 1 | 1% |
| Canada | 1 | 1% |
| Unknown | 84 | 90% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 17 | 18% |
| Student > Bachelor | 17 | 18% |
| Student > Ph. D. Student | 16 | 17% |
| Student > Master | 12 | 13% |
| Other | 5 | 5% |
| Other | 14 | 15% |
| Unknown | 12 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 46 | 49% |
| Agricultural and Biological Sciences | 25 | 27% |
| Environmental Science | 3 | 3% |
| Biochemistry, Genetics and Molecular Biology | 2 | 2% |
| Arts and Humanities | 1 | 1% |
| Other | 4 | 4% |
| Unknown | 12 | 13% |