Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Animal Burrows in Antarctic Tell of a Much Warmer Past

10.06.2008
New fossil finds are shedding light on what Antarctica was like 250 million years ago. The latest issue of the Journal of Vertebrate Paleontology reports the discovery of a number of fossilized burrows of land-living animals in Antarctica and paints a picture of an ice-free world. The first type of burrow was found in the Beardmore Glacier region, approximately 400 miles from the South Pole.

Today Antarctica is a harsh world. Devoid of trees and bushes, it is largely covered in snow and ice and battered by frigid winds. There are no land-based backboned animals that inhabit modern Antarctica – all of the penguins and seals that we imagine on the Antarctic ice are dependent on the sea. But this isolating Antarctic icebox is relatively new in geological terms, and new fossil finds are shedding light on what Antarctica was like 250 million years ago.

In the latest issue of the Journal of Vertebrate Paleontology, Chris Sidor of the University of Washington and his colleagues Molly Miller of Vanderbilt University and John Isbell of the University of Wisconsin-Milwaukee report the discovery of a number of fossilized burrows of land-living animals in Antarctica and paint a picture of an ice-free world. The first type of burrow was found in the Beardmore Glacier region, approximately 400 miles from the South Pole. It is almost 250 million years old and resembles burrows known in South Africa of a similar age. The South African burrows have been found containing the fossilized skeleton of cat-sized mammal-like reptile called Thrinaxodon.

The burrow from Antarctica “was probably made by the same type of animal,” commented Sidor. The second type of burrow is of a smaller variety and was discovered in an area known as Victoria Land. Again, comparison with similar burrows in South Africa provides clues to the original inhabitants of the burrow. Miller noted that they were probably made by “mole-sized reptiles known as procolophonids. But until we find the animal in the burrow we can’t be sure. It’s also possible that they were made by juveniles of larger animals.”

Isbell noted that 250-200 million years ago the world was a very different place and “as far as we can tell the poles remained ice free.” That is not to say that the winter months were balmy. The latest fossil finds from the polar regions certainly provide strong support for this view. “The burrows were probably important shelters for these animals,” added Sidor. The burrows and dens add to the important record of life that existed on Antarctica before the ice.

About the Society of Vertebrate Paleontology
Founded in 1940 by thirty-four paleontologists, the Society now has more than 2,000 members representing professionals, students, artists, preparators, and others interested in VP. It is organized exclusively for educational and scientific purposes, with the object of advancing the science of vertebrate paleontology.
Journal of Vertebrate Paleontology
The Journal of Vertebrate Paleontology (JVP) is the leading journal of professional vertebrate paleontology and the flagship publication of the Society. It was founded in 1980 by Dr. Jiri Zidek and publishes contributions on all aspects of vertebrate paleontology.

Vince Stricherz | newswise
Further information:
http://www.vertpaleo.org/

More articles from Earth Sciences:

nachricht Better model of water under extreme conditions could aid understanding of Earth's mantle
21.06.2018 | University of Chicago

nachricht The Janus head of the South Asian monsoon
21.06.2018 | Max-Planck-Institut für Chemie

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Better model of water under extreme conditions could aid understanding of Earth's mantle

21.06.2018 | Earth Sciences

What are the effects of coral reef marine protected areas?

21.06.2018 | Life Sciences

The Janus head of the South Asian monsoon

21.06.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>