Navigation Links
Ancient lemur's little finger poses mystery
Date:3/19/2008

Analysis of the first hand bones belonging to an ancient lemur has revealed a mysterious joint structure that has scientists puzzled.

Pierre Lemelin, an assistant professor of anatomy at the University of Alberta in Edmonton, Canada, and a team of fellow American researchers have analyzed the first hand bones ever found of Hadropithecus stenognathus, a lemur that lived 2,000 years ago. The bones were discovered in 2003 in a cave in southeastern Madagascar, an island nation off the coast of Africa in the Indian Ocean. Hadropithecus is related to the modern-day sifaka, a type of lemur with acrobatic leaping skills. A lemur is a monkey-like animal with a long tail and large eyes.

An examination of the five tiny hand bones by Lemelin and the rest of the research team revealed a never-before-seen hand joint configuration on the side of the little finger. The same joint configuration is straight in all other primates, including Archaeolemur, a close extinct relative of Hadropithecus.

Our analysis showed a mosaic of lemurid-like, monkey-like and very unique morphological traits, Lemelin said. Because the joint was present on both hands, its likely not an anomaly, but because there are no other Hadropithecus hand bones for comparison, we dont know for certain, Lemelin said. It is a mystery, and further investigation is needed to explain the difference in this species.

Lemelin and his colleagues from George Washington University, the Medical College of Georgia, and the universities of Stony Brook and Massachusetts at Amherst, also discovered that, unlike its close living relatives, Hadropithecus lacked anatomical traits linked with wrist mobility and strong finger flexion that characterize primate species that climb or cling to trees.

The hand bones also showed that Hadropithecus had very short thumbs and was a quadrupedal species, walking on all fours, much like many primates, such as baboons, do today. The discovery underscores the amazing diversity of lemurs that existed more than 2,000 years ago, when lemurs of all types ranged from pocket-sized to the size of gorillas, Lemelin noted.


'/>"/>

Contact: Bev Betkowski
beverly.betkowski@ualberta.ca
780-492-3808
University of Alberta
Source:Eurekalert  

Related biology news :

1. Scientists retrace evolution with first atomic structure of an ancient protein
2. CU-Boulder team discovers first ancient manioc fields in Americas
3. Ancient organisms discovered in Canadian gold mine
4. Amber specimen captures ancient chemical battle
5. Ancient whale fall from Californias Año Nuevo Island one of youngest, most complete known
6. Ancient whale fall from Californias Ao Nuevo Island one of youngest, most complete known
7. 454 Sequencing: Science paper describes a novel, highly efficient method of sequencing ancient DNA
8. Newfound ancient African megadroughts may have driven the evolution of humans and fishes
9. Ancient amphibians left full-body imprints
10. Scientists melt million-year-old ice in search of ancient microbes
11. Ancient fish bones reveal impacts of global warming beneath the sea
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Ancient lemur's little finger poses mystery
(Date:2/2/2016)... Feb. 2, 2016   Parabon NanoLabs ... U.S. Army Research Office and the Defense Forensics ... sensitivity of the company,s Snapshot Kinship Inference ... and, more generally, defense-related DNA forensics.  Although Snapshot ... (predicting appearance and ancestry from DNA evidence), it ...
(Date:2/1/2016)... , February 1, 2016 ... advancements to drive global touchfree intuitive gesture control market ... --> Rising sales of consumer electronics coupled with ... control market size through 2020 ... electronics coupled with new technological advancements to drive global ...
(Date:2/1/2016)... smart wallet ( www.wocketwallet.com ) announces the launch of a new video ... Las Vegas , where Joey appeared at the Wocket ... Vegas , where Joey appeared at the Wocket booth to meet ... filmed at the Consumer Electronics Show (CES2016) in Las Vegas ... greet fans. --> --> The ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... ... February 09, 2016 , ... Creation Technologies, leading global ... Highest Overall Customer Rating Award from Circuits Assembly , today announced its milestone ... USA, Canada, Mexico and China. , The EMS provider, known in the EMS ...
(Date:2/9/2016)... CA (PRWEB) , ... February 09, 2016 , ... ... present its latest innovations on its free and validated Electronic Data Capture (EDC) ... #81 the Outsourcing in Clinical Trials West Coast 2016 Conference in San Mateo, ...
(Date:2/9/2016)... HOUSTON , Feb. 9, 2016 /PRNewswire/ ... virus-driven immunotherapies for cancer, announced that its ... the European Commission as an orphan medicinal ... the deadliest form of glioma, strikes approximately ... and EU. http://photos.prnewswire.com/prnh/20160208/330986LOGO ...
(Date:2/9/2016)... , Feb. 9, 2016 ... Inhibitors-Pipeline Insights, 2016", report provides in depth ... development activities around the Protein-Tyrosine Phosphatase 1B ... product profiles in various stages of development ... II, Phase III and Preregistration. Report covers ...
Breaking Biology Technology: