File:Sciadv.abj5689.pdf
Jump to navigation
Jump to search
Size of this JPG preview of this PDF file: 471 × 600 pixels. Other resolutions: 188 × 240 pixels | 377 × 480 pixels | 603 × 768 pixels | 1,237 × 1,575 pixels.
Original file (1,237 × 1,575 pixels, file size: 1.53 MB, MIME type: application/pdf, 13 pages)
Captions
Captions
Crab in amber reveals an early colonization of nonmarine environments during the Cretaceous
Summary
[edit]| Description |
English: Amber fossils provide snapshots of the anatomy, biology, and ecology of extinct organisms that are otherwise inaccessible. The best-known fossils in amber are terrestrial arthropods—principally insects—whereas aquatic organisms are rarely represented. Here, we present the first record of true crabs (Brachyura) in amber—from the Cretaceous of Myanmar [~100 to 99 million years (Ma)]. The new fossil preserves large compound eyes, delicate mouthparts, and even gills. This modern-looking crab is nested within crown Eubrachyura, or “higher” true crabs, which includes the majority of brachyuran species living today. The fossil appears to have been trapped in a brackish or freshwater setting near a coastal to fluvio-estuarine environment, bridging the gap between the predicted molecular divergence of nonmarine crabs (~130 Ma) and their younger fossil record (latest Cretaceous and Paleogene, ~75 to 50 Ma) while providing a reliable calibration point for molecular divergence time estimates for higher crown eubrachyurans. |
| Date | |
| Source |
https://www.science.org/doi/10.1126/sciadv.abj5689 https://doi.org/10.1126/sciadv.abj5689 |
| Author | Javier Luque, Lida Xing, Derek E. G. Briggs, Elizabeth G. Clark, Alex Duque Junbo Hui, Huijuan Mai and Ryan C. McKellar |
Licensing
[edit]
This file is licensed under the Creative Commons Attribution 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:03, 22 October 2021 |  | 1,237 × 1,575, 13 pages (1.53 MB) | Pamputt (talk | contribs) | Uploaded a work by Javier Luque, Lida Xing, Derek E. G. Briggs, Elizabeth G. Clark, Alex Duque Junbo Hui, Huijuan Mai and Ryan C. McKellar from https://www.science.org/doi/10.1126/sciadv.abj5689 https://doi.org/10.1126/sciadv.abj5689 with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.