HOME >> BIOLOGY >> NEWS
World's Oldest Known Fossil Reptile Nests Discovered In Arizona's Petrified Forest

University of Colorado at Boulder and Emory University researchers have discovered scores of ancient reptile nests in Arizona's Petrified Forest National Park, believed to be the oldest such nests ever found.

The fossil nests, dating to about 220 million years ago, are similar to modern day crocodile and turtle nests, said Stephen Hasiotis, the CU-Boulder research associate who discovered them. Hasiotis and colleague Anthony Martin of Emory University in Atlanta believe the nests extend the fossil record of reptile nests by roughly 110 million years.

The 62 bowl-like depressions found by the researchers in sandstone deposits appear to be trace fossils made by large, hole-nesting reptiles such as phytosaurs (primitive, crocodile-like animals), aetosaurs (armored reptiles from that period) or possibly ancient turtles, said Hasiotis. A paper by Hasiotis and Martin was presented at the annual meeting of the Geological Society of America held Oct. 25 to Oct. 29 in Toronto.

Located on the shoreline of an ancient river system, the nests -- which average about 12 inches wide and 18 inches deep -- are similar to modern day crocodile and turtle nests. All the nests were above the ancient water line of the river, the researchers said.

"The evidence now indicates this type of nesting behavior in reptiles has been continuous from at least the Triassic Period to the present," said Hasiotis, who received his doctorate from CU-Boulder in 1997. Hasiotis, who specializes in trace fossils, has previously been credited with discovering the world's oldest crayfish fossils as well as the oldest, bee, ant and termite nests.

Expansions below the narrow surface openings probably were used as egg chambers, which in some cases are overlain by broad, shallow and elliptical depressions that may represent "body pits" made by the egg-laying females, said the researchers. Several of the fossil chambers contain what appe
'"/>

Contact: Stephen Hasiotis
713-431-7934
University of Colorado at Boulder
26-Oct-1998


Page: 1 2

Related biology news :

1. Worlds largest scientific society convenes regional meeting June 2-4 in Indianapolis
2. Worlds oldest modern hummingbirds described in Science
3. Worlds oldest mouse celebrates milestone birthday
4. Worlds largest tiger reserve declared in Myanmar
5. Worlds first databank for all living systems
6. Worlds largest-ever sea turtle symposium to address plummeting populations of sea turtles
7. Worlds first robot scientist proves a major success in the lab
8. Worlds leading mad cow diagnostic company, responds to USDAs additional BSE protection measures
9. Worlds largest scientific society holds regional meeting in Columbia, Mo.
10. Worlds most alkaline life forms found near Chicago
11. Worlds largest forest birds may produce worlds deepest bird calls

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/20/2019)... (PRWEB) , ... January 16, 2019 , ... ... collaboration with doc.ai, a medical research platform that uses artificial intelligence (AI) and ... effective supplements for Crohn’s disease and ulcerative colitis. , People will Crohn’s or ...
(Date:1/20/2019)... , ... January 17, 2019 , ... ... to drug metabolism and distribution has been documented for many years. These observed ... in terms of adverse event profiles in patients residing in different geographic regions. ...
(Date:1/14/2019)... ... January 14, 2019 , ... CellMax Life , a ... blood, will present new findings at the ASCO Gastrointestinal Cancer Symposium in San ... results from this study show CellMax Life’s blood test, based on its proprietary ...
Breaking Biology News(10 mins):
(Date:1/30/2019)... ... January 29, 2019 , ... ... announced the dosing of the first patient in a phase 1/2 clinical study ... disease associated with high morbidity and often leads to premature death. There ...
(Date:1/30/2019)... ... January 30, 2019 , ... In 2016, Veronafiere ... to promote and give recognition to producers whose work focuses entirely on natural, ... place in Verona, Italy, contemporaneously to the 5StarWines blind tasting organized from April ...
(Date:1/24/2019)... (PRWEB) , ... January 23, 2019 , ... ... in microbial genomics, has awarded microbiome research support in study design, planning, sample ... Faculty of Medical Sciences, St. Augustine Campus in Trinidad led by Dr. Elaine ...
(Date:1/20/2019)... , ... January 17, 2019 , ... ... Platinum Partner announces the launch of a specialized automation technology, titled Automate 3D. ... for automatic generation of models and drawings to deliver to end-users, customers, and ...
Breaking Biology Technology:
Cached News: