HOME >> BIOLOGY >> NEWS
Fossil discovery marks earliest record of limbloss in ancient lizard

A University of Alberta paleontologist has helped discover the existence of a 95 million-year-old snakelike marine animal, a finding that provides not only the earliest example of limbloss in lizards but the first example of limbloss in an aquatic lizard.

"This was unsuspected," said Dr. Michael Caldwell, from the U of A's Faculty of Science. "It adds to the picture we have of what was happening 100 million years ago. We now know that losing limbs isn't a new thing and that lizards were doing it much earlier than we originally thought. On top of that, this lizard is aquatic. All the examples we have in our modern world are terrestrial, so it's a big deal."

The evidence offers the earliest record of vestigial limbsonce used in an animal's evolutionary past but that has lost its original function-- in a fossil lizard. The newly named species--Adriosaurus microbrachis--is described in the current issue of the Journal of Vertebrate Paleontology and offers clues to the evolution of terrestrial lizards as they returned to water. The fossil was originally collected during the 19th Century from a limestone quarry in Slovenia. It then sat at the Natural History Museum in Trieste, Italy for almost 100 years before Caldwell and a colleague found it in 1996 during a trip to Europe. He later connected with Alessandro Palci, then a graduate student in Italy whom he helped supervise, and they worked on the fossil together.

The researchers soon realized the lizard's front limbs were not formed during development. "There was a moment when I said, 'I think we stumbled on a new fossil illustrating some portion of the aquatic process of losing limbs,'" said Caldwell. "There are lots of living lizards that love to lose their forelimbs and then their rearlimbs, but we didn't know it was being done 100 million years ago and we didn't know that it was happening among groups of marine lizards."

This discovery is an excellent ex
'"/>

Contact: Phoebe Dey
phoebe.dey@ualberta.ca
780-492-0437
University of Alberta
22-Mar-2007


Page: 1 2 3

Related biology news :

1. Fossil DNA illuminates life
2. Fossils of ancient sea monster found in Montana
3. Fossil is missing link in elephant lineage
4. Fossilized liquid assembly: Nanomaterials research tool
5. Fossils pinpoint tropics as Earths most fruitful biodiversity spawning ground
6. Early bird caught the fish: Fossils depict aquatic origins of birds 115 million years ago
7. Fossil wood gives vital clues to ancient climates
8. Fossils tell the hole story of killer drillers and their prey
9. Fossil Patagonian plants show high insect feeding diversity 52 million years ago
10. Fossil records show biodiversity comes and goes
11. Enzyme discovery sheds light on vitamin D

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Fossil discovery marks earliest record limbloss ancient lizard

(Date:10/17/2014)... release is available in German . ... a very few drugs. When treating overdoses, doctors are often ... especially difficult if there is a combination of drugs involved. ... and accidentally swallows his grandmother,s pills? ETH professor Jean-Christophe Leroux ... to find an answer to this question. "The task was ...
(Date:10/16/2014)... have challenged conventional thinking on how the bowel lining ... for how bowel cancer starts. , The researchers produced ... regenerating the ,crypts, that are a feature of the ... in bowel cancer development, a controversial finding as scientists ... Using 3D imaging technologies, Dr Chin Wee Tan and ...
(Date:10/16/2014)... 16, 2014 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile commerce ... including Wocket™, the Smart Wallet, at the 13 th ... a leading global conference on the intersection of technology ... Mark Anderson , founder and publisher of the Strategic ...
Breaking Biology News(10 mins):Emergency aid for overdoses 2Emergency aid for overdoses 3Cryptic clues drive new theory of bowel cancer development 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
(Date:10/22/2014)... Oct. 22, 2014 Research and ... "Global DNA Diagnostics Market (Product types, Application, ... Global Trends, Company Profiles, Demand, Insights, Analysis, Research, ... report to their offering. ... applications, techniques, end users and Geography) Global Size, ...
(Date:10/22/2014)... 2014 Involution Studios , a ... a new infographic, Understanding Ebola . The ... designed, easy to follow informative tool for anyone wanting ... symptoms and prevention. , "As the news has spread ... Ebola outbreak represents not only a healthcare crisis with ...
(Date:10/22/2014)... 22, 2014 According to new ... Service Type (Consulting, Integration, Deployment & Support), by ... Model (Public, Private, Others (Hybrid & Community)) - ... and segments the Cloud Professional Services Market into ... of revenues. It also identifies the drivers and ...
(Date:10/22/2014)... KONG , Oct. 22, 2014  aTyr Pharma ... that rare disease expert John C. McKew , ... McKew brings more than two decades of expertise in ... Institutes of Health, Wyeth Research and Genetics Institute, Inc. ... aTyr,s efforts to expand and translate its novel Physiocrine ...
Breaking Biology Technology:Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 2Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 3Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3
Cached News: