HOME >> BIOLOGY >> NEWS
Science Report: Super-crocodile crawls out of the African Cretaceous

odilian was covered from head to mid tail in an overlapping armor of scutes (bony plates embedded in the skin), each sporting annual growth rings that the researchers used to estimate the age of a given animal.

Thin sections from scutes, taken from a fossil individual that had reached about 80 percent of its estimated adult size, show around 40 growth rings. This may mean that the animals took 50 to 60 years to reach their full size, says the Science study team.

This surprising longevity for a crocodilian suggests that Sarcosuchus attained its mammoth proportions by extending the duration of its growing time, rather than speeding up its rate of growth like most dinosaurs, says Sereno.

The new Sarcosuchus skulls have long snouts, comprising about 75 percent of total skull length, that are relatively broad compared to the needle nose of the living gharial (a modern crocodilian from India) and other ancient, narrow-snouted crocodilians like Pholidosaurus and Terminonaris.

Features in the skull and jaw link Sarcosuchus with Pholidosaurus and Terminonaris on the reptile family tree, according to the Science report. Yet unlike Pholidosaurus and Terminonaris, found in marine deposits, Sarcosuchus fossils come from river deposits, located about 100 miles from any ancient coastline.

These two crocodilian cousins were also specialized fish-eaters, while Sarcosuchus' anatomy points to a more generalized diet. Sarcosuchus had a substantial overbite, with its upper jaw overhanging the front teeth of the lower jaw. All the teeth of the lower jaw fit inside the upper tooth rows during a bite, rather than interlocking like the teeth of an exclusively fish-feeding jaw. Many of Sarcosuchus' teeth themselves are stout, smooth, and rounded, more suited for puncturing and crushing, says Sereno, who believes the giant may have included dinosau
'"/>

Contact: Lisa Onaga
lonaga@aaas.org
202-326-7088
American Association for the Advancement of Science
25-Oct-2001


Page: 1 2 3

Related biology news :

1. A long-necked sea predator from China described in Science
2. Brown ecologist garners major National Science Foundation grant
3. Popular Science announces Third Annual Brilliant 10
4. Winner of 2004 EMBO Science Writing Prize announced
5. Study in Science reveals recreational fishing takes big bite of ocean catch
6. New paper in Science introduces revolutionary new paradigm for fishery management
7. Articles on forest fire risks published in BioScience
8. Ralph J. Cicerone nominated to be next National Academy of Sciences president
9. Canine word-learning research published in Science
10. Articles on remote sensing in ecology published in BioScience
11. Fostering Diversity in the Sciences Symposium

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


(Date:4/6/2017)... -- Forecasts by Product Type (EAC), Biometrics, ... (Transportation & Logistics, Government & Public Sector, Utilities / ... Facility, Nuclear Power), Industrial, Retail, Business Organisation (BFSI), Hospitality ... looking for a definitive report on the $27.9bn Access ... ...
(Date:4/4/2017)...   EyeLock LLC , a leader of iris-based ... Patent and Trademark Office (USPTO) has issued U.S. Patent ... an iris image with a face image acquired in ... 45 th issued patent. "The ... the multi-modal biometric capabilities that have recently come to ...
(Date:3/30/2017)... , March 30, 2017 Trends, opportunities ... (physiological and behavioral), by technology (fingerprint, AFIS, iris recognition, ... recognition, and others), by end use industry (government and ... immigration, financial and banking, and others), and by region ... , Asia Pacific , and ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for ... June 2018 in San Francisco, CA. The Summit brings together current and former FDA ... board directors and government officials from around the world to address key issues in ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
(Date:10/10/2017)... ... October 10, 2017 , ... Dr. Bob Harman, founder and CEO of ... Rotary Club. The event entitled “Stem Cells and Their Regenerative Powers,” ... Dr. Harman, DVM, MPVM was joined by two human doctors: Peter B. Hanson, ...
(Date:10/9/2017)... SAN DIEGO , Oct. 9, 2017 /PRNewswire/ ... a biological mechanism by which its ProCell stem ... of critical limb ischemia.  The Company, demonstrated that ... the amount of limbs saved as compared to ... of the molecule HGF resulted in reduction of ...
Breaking Biology Technology:
Cached News: