Navigation Links
CT scans reveal that dinosaurs were airheads
Date:12/8/2008

ATHENS, Ohio (Dec. 8, 2008) Paleontologists have long known that dinosaurs had tiny brains, but they had no idea the beasts were such airheads.

A new study by Ohio University researchers Lawrence Witmer and Ryan Ridgely found that dinosaurs had more air cavities in their heads than expected. By using CT scans, the scientists were able to develop 3-D images of the dinosaur skulls that show a clearer picture of the physiology of the airways.

"I've been looking at sinuses for a long time, and indeed people would kid me about studying nothinglooking at the empty spaces in the skull. But what's emerged is that these air spaces have certain properties and functions," said Witmer, Chang Professor of Paleontology in Ohio University's College of Osteopathic Medicine.

Witmer and Ridgely examined skulls from two predators, Tyrannosaurus rex and Majungasaurus, and two ankylosaurian dinosaurs, Panoplosaurus and Euoplocephalus, both plant eaters with armored bodies and short snouts. For comparison, the scientists also studied scans of crocodiles and ostriches, which are modern day relatives of dinosaurs, as well as humans.

The analysis of the predatory dinosaurs revealed large olfactory areas, an arching airway that went from the nostrils to the throat, and many sinusesthe same cavities that give us sinus headaches. Overall, the amount of air space was much greater than the brain cavity.

The CT scans also allowed Witmer and Ridgely to calculate the volume of the bone, air space, muscle and other soft tissues to make an accurate estimate of how much these heads weighed when the animals were alive. A fully fleshed-out T. rex head, for example, weighed more than 1,100 pounds.

"That's more than the combined weight of the whole starting lineup of the Cleveland Cavaliers," Witmer said.

Witmer suggests that the air spaces helped lighten the load of the head, making it about 18 percent lighter than it would have bee
'/>"/>

Contact: Andrea Gibson
gibsona@ohio.edu
740-597-2166
Ohio University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. New discovery may enhance MRI scans, lead to portable MRI machines
2. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
3. Study begins to reveal clues to the cause and progression of sepsis
4. Comet probes reveal evidence of origin of life, scientists claim
5. Structure of 450 million year old protein reveals evolutions steps
6. UF scientists reveal how dietary restriction cleans cells
7. Neural stem cell study reveals mechanism that may play role in cancer
8. New method reveals substances on surfaces of any kind
9. Study reveals predation-evolution link
10. IDEMA Reveals Program Highlights for DISKCON USA 2007
11. Study reveals possible genetic risk for fetal alcohol disorders
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2015)... FELTON, California , September 2, 2015 /PRNewswire/ ... with the security purpose implied in a system ... hand geometry, voice, signature, iris, vein, DNA and ... crimes has forced to develop such system which ... by username, password, PIN, Patterns and tokens are ...
(Date:9/1/2015)... , Sept. 1, 2015  Automation and ... during airport passenger screening. This is the first ... screening process will become unintrusive. An assortment of ... on voluntary background investigations will transform the passenger ... & Sullivan, Global Airport Passenger Screening Market ...
(Date:8/31/2015)... , August 31, 2015 Growing ... technology in government digitization projects to drive India ... recently published TechSci Research report, " India Biometrics Market Forecast ... is projected to grow at a CAGR of ... is anticipated on account of extensive use of biometric technology ...
Breaking Biology News(10 mins):Biometrics Technology Market is Expected to Reach $13.8 Billion by 2015: Hexa Research Inc. 2Biometrics Technology Market is Expected to Reach $13.8 Billion by 2015: Hexa Research Inc. 3Biometrics Technology Market is Expected to Reach $13.8 Billion by 2015: Hexa Research Inc. 4The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 2The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 3The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 4India Biometrics Market to Grow at Over 35% Through 2020, Says TechSci Research 2India Biometrics Market to Grow at Over 35% Through 2020, Says TechSci Research 3
... presumed that the last glacial period denuded the Scandinavian ... weather began and melted away the ice cover some ... research headed by Professor Eske Willerslev from the Centre ... the University of Uppsala, Sweden, and Inger Greve Alsos ...
... potential genetic regulators in planarian stem cells, Whitehead Institute ... two main functions of stem cells. Three of the ... similar to those known to regulate mammalian embryonic stem ... attractive model for studying stem cell biology in vivo. ...
... Cut marks found on Ice Age bones indicate that humans ... known. Dr. Brian Redmond, curator of archaeology at The Cleveland ... in the Feb. 22, 2012 online issue of the journal ... animal bones found in 1998 in the collections of the ...
Cached Biology News:Sturdy Scandinavian conifers survived Ice Age 2Sturdy Scandinavian conifers survived Ice Age 3Planarian genes that control stem cell biology identified 2Planarian genes that control stem cell biology identified 3Research reveals first evidence of hunting by prehistoric Ohioans 2
(Date:9/2/2015)... SAN FRANCISCO, Calif. , Sept. 2, 2015 /PRNewswire/ ... that Bonnie H. Anderson , president and chief ... Healthcare Conference on Wednesday, September 16, 2015 at 10:30 ... . The live audio webcast and ... http://investor.veracyte.com . The webcast will be available shortly after ...
(Date:9/2/2015)... ... September 02, 2015 , ... Advancing in medical imaging ... vital sign monitoring in ICU to 3D skull printing analysis for Neurosurgery, ONYX ... clinical decisions with simultaneous access to high precision medical images and electronic health ...
(Date:9/2/2015)... , ... September 02, 2015 , ... ... and life science research, today unveiled Genedata Screener ® version 13.0 at ... in-vitro screening brings to market a rich set of new capabilities. Screener now ...
(Date:9/1/2015)... , Sept. 1, 2015  ContraVir Pharmaceuticals, Inc. (NASDAQ: ... development and commercialization of targeted antiviral therapies, announced today ... 17 th Annual Global Investment Conference sponsored by ... 8-10, 2015 at The St. Regis Hotel in ... James Sapirstein , Chief Executive Officer, will provide ...
Breaking Biology Technology:Veracyte to Present at Morgan Stanley Global Healthcare Conference 2Surgical Workstation Powered by 6th Gen. Intel® Core™ Skylake Processors 2Surgical Workstation Powered by 6th Gen. Intel® Core™ Skylake Processors 3New Genedata Screener 13.0 with Support for High Throughput Flow Cytometry and DMPK Unveiled at ELRIG 2New Genedata Screener 13.0 with Support for High Throughput Flow Cytometry and DMPK Unveiled at ELRIG 3New Genedata Screener 13.0 with Support for High Throughput Flow Cytometry and DMPK Unveiled at ELRIG 4ContraVir to Present at Rodman & Renshaw 17th Annual Global Investment Conference 2
... Doyle , noting that May 24 is the one-year anniversary ... Bush's ban on federal funding for embryonic stem cell ... , ,Doyle noted that Senate Majority Leader Bill Frist ... to schedule a vote on the Stem Cell Research Enhancement ...
... its way, English will become the official language of the United ... beat them to it. , ,For the first time, World ... written and spoken English in order to be among the 44 ... game is international, its football, as its called in most of ...
... new phase. Both are headed to a jumpsuit jamboree courtesy of ... ex-heads of Enron - Ken Lay and Jeff Skilling - were ... of their fellow Houstonians. The duo will soon be sentenced before ... , , When Creative Becomes Criminal , ,It is ...
Cached Biology Technology:English as the lingua franca of a new age: Its more powerful than any law 2English as the lingua franca of a new age: Its more powerful than any law 3Are there more Enrons out there? 2Are there more Enrons out there? 3Are there more Enrons out there? 4
GOAT ANTI HUMAN PARAINFLUENZA VIRUS 2+3...
... Cary 50 Microplate Reader accessory ... per analysis by extending the ... award-winning Cary 50 instruments. Use ... 384 samples in microlitre volumes, ...
IMAGEQUANT 300 WKSTN, 1 EA. Category: ImageQuant CCD Imagers....
PAb to Hu-IFN-Alpha/Beta R2 [(IFNAR2) CD118], Rabbit Serum, neutralizing Binds to but does not neutralize human interferon alpha/beta receptor...
Biology Products: