Navigation Links
Evidence contradicts idea that starvation caused saber-tooth cat extinction
Date:12/26/2012

In the period just before they went extinct, the American lions and saber-toothed cats that roamed North America in the late Pleistocene were living well off the fat of the land.

That is the conclusion of the latest study of the microscopic wear patterns on the teeth of these great cats recovered from the La Brea tar pits in southern California. Contrary to previous studies, the analysis did not find any indications that the giant carnivores were having increased trouble finding prey in the period before they went extinct 12,000 years ago.

The results, published on Dec. 26 in the scientific journal PLOS ONE, contradicts previous dental studies and presents a problem for the most popular explanations for the Megafaunal (or Quaternary) extinction when the great cats, mammoths and a number of the largest mammals that existed around the world disappeared.

"The popular theory for the Megafaunal extinction is that either the changing climate at the end of the last Ice Age or human activity or some combination of the two killed off most of the large mammals," said Larisa DeSantis, assistant professor of earth and environmental sciences at Vanderbilt, who headed the study. "In the case of the great cats, we expect that it would have been increasingly difficult for them to find prey, especially if had to compete with humans. We know that when food becomes scarce, carnivores like the great cats tend to consume more of the carcasses they kill. If they spent more time chomping on bones, it should cause detectable changes in the wear patterns on their teeth."

In 1993, Blaire Van Valkenburgh at UCLA published a paper on tooth breakage in large carnivores in the late Pleistocene. Analyzing teeth of American lions, saber-tooth cats, dire wolves and coyotes from La Brea, she found that they had approximately three times the number of broken teeth of contemporary predators and concluded, "...these findings suggest that these species u
'/>"/>

Contact: David Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Chinese scientists discover evidence of giant pandas population history and local adaptation
2. First evidence of fish sensing geomagnetic fields from a Czech Christmas market
3. First evidence of ocean acidification affecting live marine creatures in the Southern Ocean
4. New evidence of dinosaurs role in the evolution of bird flight
5. More evidence needed to support use of autism interventions
6. Mobile phones and wireless networks: No evidence of health risk found
7. Researchers find first evidence for a genetic cause for Barretts oesophagus
8. First photo evidence of snub-nosed monkey species in China
9. Alpine Fault study shows new evidence for regular magnitude 8 earthquakes
10. Caltech researchers find evidence of link between immune irregularities and autism
11. Cancer Cell article shows first evidence for targeting of Pol I as new approach to cancer therapy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Evidence contradicts idea that starvation caused saber-tooth cat extinction
(Date:12/10/2014)... -- CIE San Diego has launched an innovative trust ... that enhances care coordination among social service and care ... earned a second $1 million grant from the Alliance ... in community and; will be recognized as a "Live ... 4-6p. CIE San Diego today announced the ...
(Date:12/5/2014)... Utah , Dec. 4, 2014  Tute Genomics, ... raised $2.3 million in Series A1 funding led by ... investors also participated in the investment round. ... the healthcare community adopts next-generation sequencing and seeks new ... said Reid Robison , MD MBA, and CEO ...
(Date:11/21/2014)... According to a new market research report ... Control, Intrusion Detection, Parking Management, Under Vehicle Inspection), End ... - Global Forecasts to 2020", published by MarketsandMarkets, The ... $25 Billion in 2014 and is expected to reach ... 8.69%. Browse 116 market data Tables and ...
Breaking Biology News(10 mins):Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3
... June 09, 2009 / b3c newswire / - ... Netherlands Organisation for Applied Scientific Research TNO today announced ... further develop Amarna’s viral gene delivery platform SVac ... for the manufacture, formulation and testing of viral gene ...
... axial complex of sea urchins ( Echinoidea ), an ... that group of marine invertebrates there exists a structural ... in BioMed Central,s open access journal Frontiers in ... structural data available on a given organ in combination ...
... Merck Irving S. Sigal Memorial Award is being presented ... Infectious Disease Initiative at the Broad Institute of MIT ... Medicine at Harvard Medical School. Sponsored by Merck Research ... presented in memory of Irving S. Sigal, who was ...
Cached Biology News:Amarna Therapeutics B.V. and TNO announce SVac research and development partnership 2Amarna Therapeutics B.V. and TNO announce SVac research and development partnership 3
(Date:12/17/2014)... , Dec. 17, 2014 Tigercat ... Phase 2 study evaluating the investigational oral NK-1 ... patients with severe, chronic itch who are unresponsive ... care, including topical steroids and antihistamines. ... in Visual Analog Scale (VAS) itch score from ...
(Date:12/15/2014)... & PETACH TIKVAH, Israel ... (NASDAQ: BCLI ), a leading developer of ... that wholly-owned subsidiary Brainstorm Cell Therapeutics Ltd. was awarded ... Israel,s Office of the Chief Scientist (OCS).  ... in receipt of grant support from the Office of ...
(Date:12/15/2014)... Dec. 15, 2014  Origin Agritech Limited (NASDAQ GS: SEED) ... supplier of crop seeds in China , ... fiscal year 2014 ended September 30, 2014, before the market ... will host a teleconference on January 8, 2015, at 8:00 ... time to discuss the results. To participate in the call, ...
(Date:12/13/2014)... - MaRS and Virgin Unite Canada, the non-profit foundation of ... to support Canadian entrepreneurs tackling social and environmental challenges. Today, ... the MaRS Centre to announce the new partnership, which includes ... fund has $1 million in seed capital provided by Virgin ... Social Innovation Foundation, founded by Alison Lawton . ...
Breaking Biology Technology:Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4BrainStorm Receives $1,100,000 for its 8th Annual Non-Dilutive Grant from Israel's Chief Scientist Office 2BrainStorm Receives $1,100,000 for its 8th Annual Non-Dilutive Grant from Israel's Chief Scientist Office 3Origin Agritech Limited to Announce Fiscal 2014 Annual Financial Results on January 8th, 2015 2Origin Agritech Limited to Announce Fiscal 2014 Annual Financial Results on January 8th, 2015 3MaRS and Virgin Unite partner to invest in business as a force for good 2MaRS and Virgin Unite partner to invest in business as a force for good 3
... million, -- Quarterly Net Income Increases 76.5% to ... YORK and HAIKOU, Hainan, China, May 2 /Xinhua-PRNewswire-FirstCall/,-- ... Board: CPHI),which develops, manufactures, and markets generic and ... results,for the first quarter of 2008., ...
... May 2 eResearchTechnology, Inc.,(eRT), (Nasdaq: ... (ECG) collection and interpretation services,announced today that ... and,Chief Executive Officer, and Richard Baron, the ... at the Deutsche Bank 33rd Annual,Healthcare Conference ...
... 2 /PRNewswire-FirstCall/ - GeneNews Limited (TSX: GEN), ... for the early,detection of diseases and personalized ... for the first quarter ended March 31,2008., ... of the key milestones,necessary to support the ...
Cached Biology Technology:China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 2China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 3China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 4China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 5China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 6China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 7China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 8China Pharma Holdings, Inc. Announces First Quarter 2008 Financial Results 9eResearchTechnology to Present at the Deutsche Bank 33rd Annual Healthcare Conference on May 7th 2008 2GeneNews Announces First Quarter Results 2GeneNews Announces First Quarter Results 3GeneNews Announces First Quarter Results 4GeneNews Announces First Quarter Results 5GeneNews Announces First Quarter Results 6GeneNews Announces First Quarter Results 7GeneNews Announces First Quarter Results 8
Proteinase K Buffer 3.9 ml...
Rabbit polyclonal to VEGF Receptor 2 (phospho Y1214) ( Abpromise for all tested applications). entrezGeneID: 3791 SwissProtID: P35968...
Glutathione Agarose Beads 10 ml...
Anti-Ephrin B1 Host: rabbit polyclonal Species Reactivity: human Applications: WB Storage: 4C...
Biology Products: