Paleontology

Articles:

55 Reverse-engineering the locomotion of a stem amniote.
https://www.nature.com/articles/s41586-018-0851-2

54 Evidence for the Cretaceous shark Cretoxyrhina mantelli feeding on the pterosaur Pteranodon from the Niobrara Formation.
https://peerj.com/articles/6031/

53 Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals.
http://science.sciencemag.org/content/361/6408/1246

52 Testosterone in ancient hair from an extinct species.
https://onlinelibrary.wiley.com/doi/abs/10.1111/pala.12391

51 Testosterone in ancient hair from an extinct species.
https://onlinelibrary.wiley.com/doi/full/10.1111/pala.12391

50 Sediment‐encased maturation: a novel method for simulating diagenesis in organic fossil preservation.
https://onlinelibrary.wiley.com/doi/full/10.1111/pala.12386

49 The rise of algae in Cryogenian oceans and the emergence of animals.
https://www.nature.com/nature/journal/v548/n7669/full/nature23457.html

48 T. rex skin suggest it was covered in scales—not feathers.
http://rsbl.royalsocietypublishing.org/content/13/6/20170092

47 Fossil and genomic evidence constrains the timing of bison arrival in North America.
http://www.pnas.org/content/114/13/3457

46 Expansion for the Brachylophosaurus canadensis Collagen I Sequence and Additional Evidence of the Preservation of Cretaceous Protein.
http://pubs.acs.org/doi/abs/10.1021/acs.jproteome.6b00873?journalCode=jprobs

45 Live birth in an archosauromorph reptile.
http://www.nature.com/articles/ncomms14445

44 Evidence of preserved collagen in an Early Jurassic sauropodomorph dinosaur revealed by synchrotron FTIR microspectroscopy.
http://www.nature.com/articles/ncomms14220

43 Dinosaur incubation periods directly determined from growth-line counts in embryonic teeth show reptilian-grade development.
http://www.pnas.org/content/114/3/540.abstract

42 Wild monkeys flake stone tools.
http://www.nature.com/nature/journal/v539/n7627/full/nature20112.html

41 End-Cretaceous extinction in Antarctica linked to both Deccan volcanism and meteorite impact via climate change.
http://www.nature.com/ncomms/2016/160705/ncomms12079/full/ncomms12079.html

40 Homo naledi, a new species of the genus Homo from the Dinaledi Chamber, South Africa.
http://elifesciences.org/content/4/e09560

39 A four-legged snake from the Early Cretaceous of Gondwana.
http://www.sciencemag.org/content/349/6246/416.abstract

38 Fibres and cellular structures preserved in 75-million–year-old dinosaur specimens.
http://www.nature.com/ncomms/2015/150609/ncomms8352/full/ncomms8352.html

37 A bizarre Jurassic maniraptoran theropod with preserved evidence of membranous wings.
http://www.nature.com/nature/journal/v521/n7550/full/nature14423.html

36 A 17-My-old whale constrains onset of uplift and climate change in east Africa.
http://www.pnas.org/content/112/13/3910.abstract

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