Navigation Links
Battle scars found on an ancient sea monster

Scars on the jaw of a 120 million year old marine reptile suggest that life might not have been easy in the ancient polar oceans. The healed bite wounds were probably made by a member of the same species. Such injuries give important clues about the social behaviour of extinct sea creatures from the time of dinosaurs. The find is described in a forthcoming issue of Acta Palaeontologica Polonica.

Found in the remote desert near the town of Marree in northern South Australia, the fossilised skeleton belonged to an ichthyosaur, a dolphin-like marine reptile that lived during the 'Age of Dinosaurs'. Ichthyosaurs were fast swimming predators that fed on fish and squid-like animals. Adults would have been around six metres in length and had long-snouted heads with over 100 pointed, crocodile-like teeth.

When the ichthyosaur was alive, the Australian continent was still joined to Antarctica and would have been much further south than it is today close to the southern polar circle. What is now arid grassland was then the bottom of a vast inland sea that experienced freezing water temperatures and even seasonal icebergs.

The surprising discovery of well preserved bite marks on the bones of the ichthyosaur's lower jaw were made during painstaking cleaning and reassembly of its skeleton in the laboratory. Evidence of advanced healing indicates that the animal survived the attack and lived on for some time afterwards.

"Pathological traces on ancient fossilised bones and teeth give unique insights into the lives and social behaviours of extinct animals" says Benjamin Kear, one of the authors of the study and an Assistant Professor with the Palaeobiology Programme at Uppsala University. "Such finds have also rarely been reported in ichthyosaurs before".

The size and spacing of the tooth marks do match any potential predators or prey. Rather, they are most consistent with another adult ichthyosaur, suggesting that the wounds were inflicted during combat over food, mates or territory. Facial biting is a common social interaction observed in animals today and is often directed towards restraining the opponents jaws.


Contact: Benjamin Kear
Uppsala University

Related biology news :

1. New vitamin D-fortified food could battle widespread need for the sunshine vitamin
2. Whats coming next in the biochemical battle of the bulge?
3. Insect scientists battle invasive species in Hawaii
4. $40 million helps Cornell lead global battle against wheat pathogen that threatens food security
5. NIH funds center at Arizona State to battle infectious diseases
6. Divide and conquer: Genes decide who wins in the bodys battle against cancer
7. MSU researchers awarded $9.1 million grant to battle malaria in Malawi
8. Enlisting a drug discovery technique in the battle against global warming
9. Helpful yeast battles food-contaminating aflatoxin
10. A new ally in the battle against cocaine addiction
11. Stem cells battle for space
Post Your Comments:
(Date:11/9/2015)... DUBLIN , Nov. 09, 2015 /PRNewswire/ ... announced the addition of the "Global ... to their offering. --> ... "Global Law Enforcement Biometrics Market 2015-2019" ... Research and Markets ( ) ...
(Date:11/2/2015)... 2, 2015  SRI International has been awarded a ... development services to the National Cancer Institute (NCI) PREVENT ... scientific expertise, modern testing and support facilities, and analytical ... and toxicology studies to evaluate potential cancer prevention drugs. ... PREVENT Cancer Drug Development Program is an NCI-supported pipeline ...
(Date:10/29/2015)... Daon, a global leader in mobile biometric ... new version of its IdentityX Platform , IdentityX ... have already installed IdentityX v4.0 and are ... FIDO UAF certified server component as an option ... features. These customers include some of the largest and ...
Breaking Biology News(10 mins):
(Date:11/27/2015)... /PRNewswire/--  Mallinckrodt plc (NYSE: MNK ), a ... closed the sale of its global contrast media and ... in a transaction valued at approximately $270 million. The ... total of approximately 1,000 employees spread across the globe, ... area. This entire workforce and the manufacturing ...
(Date:11/25/2015)... --> ... 2020 report analyzes that automating biobanking workflow will ... long-term samples, minimizing manual errors, improving the workflow ... errors such as mislabeling or inaccurate sample barcoding ... a vital role in blood fractionation, DNA extraction, ...
(Date:11/25/2015)... , Nov. 25, 2015  Neurocrine Biosciences, Inc. ... Gorman , President and CEO of Neurocrine Biosciences, will ... Conference in New York . ... visit the website approximately 5 minutes prior to the ... replay of the presentation will be available on the ...
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... ... company uBiome, were featured on AngelList early in their initial angel funding process. ... AngelList syndicate for individuals looking to make early stage investments in the microbiome ...
Breaking Biology Technology: