Navigation Links
'Ardi' skull reveals links to human lineage
Date:1/6/2014

, led by Suwa, was published in Science in 2009, whose work (with the Middle Awash team) first revealed humanlike aspects of its base. Kimbel co-leads the team that recovered the earliest known Australopithecus skulls from the Hadar site, home of the "Lucy" skeleton, in Ethiopia.

"Given the very tiny size of the Ardi skull, the similarity of its cranial base to a human's is astonishing," says Kimbel.

The cranial base is a valuable resource for studying phylogenetic, or natural evolutionary relationships, because its anatomical complexity and association with the brain, posture, and chewing system have provided numerous opportunities for adaptive evolution over time. The human cranial base, accordingly, differs profoundly from that of apes and other primates.

In humans, the structures marking the articulation of the spine with the skull are more forwardly located than in apes, the base is shorter from front to back, and the openings on each side for passage of blood vessels and nerves are more widely separated.

These shape differences affect the way the bones are arranged on the skull base such that it is fairly easy to tell apart even isolated fragments of ape and human basicrania.

Ardi's cranial base shows the distinguishing features that separate humans and Australopithecus from the apes. Kimbel's earlier research (with collaborator Rak) had shown that these human peculiarities were present in the earliest known Australopithecus skulls by 3.4 million years ago.

The new work expands the catalogue of anatomical similarities linking humans, Australopithecus, and Ardipithecus on the tree of life and shows that the human cranial base pattern is at least a million years older than Lucy's species, A. afarensis.

Paleoanthropologists generally fall into one of two camps on the cause of evolutionary changes in the human cranial base. Was it the adoption of upright pos
'/>"/>

Contact: Julie Russ
jruss@asu.edu
480-338-1733
Arizona State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Canadian Journal of Cardiology publishes new atrial fibrillation guidelines
2. Minneapolis Heart Institute selected to participate in Cardiovascular Cell Therapy Research Network
3. FirstMark Exhibiting at the Inaugural Atlanta Clinical Cardiology Update
4. HUNT Biosciences and SomaLogic collaborate to validate protein biomarkers of cardiovascular risk
5. Tax on salt could reduce cardiovascular disease deaths by 3 percent
6. Air pollution level changes in Beijing linked with biomarkers of cardiovascular disease
7. UH Case Medical Center, CardioKinetix reveal promising data for treatment for heart failure
8. New means of safeguarding world fish stocks proven
9. Cardio fitness levels of breast cancer patients may affect survival
10. FirstMark Welcomes Renowned Cardiologist and Researcher Dr. Prediman K. Shah to Scientific Advisor Board
11. Pre-surgical steps for eye surgery are standardized through JoVEs video publication
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Ardi' skull reveals links to human lineage
(Date:7/9/2015)... , July 9, 2015  Synaptics Inc. ... of human interface solutions, today announced a ... first fully hardware encapsulated fingerprint sensor and ... technology is literally off the grid, isolating ... matching within the fingerprint sensor to provide ...
(Date:7/8/2015)... , N.J. and NEW YORK , July ... Guidepoint today announced BD & Guidepoint ... companies with free access to Guidepoint,s expert network services. ... that are developing cutting-edge technologies to improve healthcare delivery ... Guidepoint research manager, each start-up entrepreneur will be able ...
(Date:7/8/2015)... Florida , July 8, 2015 ... evolving as this summer,s must have products such as wearables, ... demand as popularity for biometrics based devices continues to rapidly ... NXT-ID, Inc. (NASDAQ: NXTD ), Google Inc. (NASDAQ: ... (NYSE: FIT ), GoPro, Inc. (NASDAQ: GPRO ) ...
Breaking Biology News(10 mins):Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 2Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 3BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 4Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 5Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 6
... 1.8 metres of DNA partitioned into 46 chromosomes. These ... daughter cells at every division. Condensation, the shortening of ... of genetic material during cell division and helps preventing ... European Molecular Biology Laboratory (EMBL) for the first time ...
... materials, invented by researchers at the University of Illinois, ... The new materials rely upon embedded, three-dimensional microvascular networks ... manner that a cut in the skin triggers blood ... materials will trigger the flow of healing agent to ...
... and hybrid cars have become popular symbols of green ... emissions of carbon dioxide, the leading greenhouse gas that ... called carbon sequestration, traps carbon dioxide after it is ... the atmosphere. The practice could transform heavy carbon spewers, ...
Cached Biology News:Researchers shed light on shrinking of chromosomes 2Now, self-healing materials can mimic human skin, healing again and again 2Researchers examine carbon capture and storage to combat global warming 2Researchers examine carbon capture and storage to combat global warming 3Researchers examine carbon capture and storage to combat global warming 4Researchers examine carbon capture and storage to combat global warming 5Researchers examine carbon capture and storage to combat global warming 6
(Date:7/30/2015)... ... July 31, 2015 , ... Ralco is honored to announce that it ... Fair to be held August 5-9 in Marshall. The Ralco Enrichment Center is an ... and how agriculture impacts their daily lives. This unique exhibit also features a birthing ...
(Date:7/30/2015)... -- According to a new market research ... PKPD, Trial Design, Toxicity Prediction, In-house, Contract Service), by ... End Users - Global Forecast to 2020", published by ... 2,107.99 million by 2020 from USD 1,034.93 million in ... Browse more than 75 market ...
(Date:7/30/2015)... 30, 2015 Ascendis Pharma A/S (Nasdaq: ... its innovative TransCon technology to address significant unmet ... a six-month Phase 2 study to evaluate the ... in 53 treatment-naïve, pre-pubertal children with growth hormone ... pleased with the top-line results from our Phase ...
(Date:7/29/2015)... 30, 2015 Sanofi, a ... the second quarter of 2015. CEO Olivier ... its performance in different businesses. Watch ... http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire Topics covered in the ... - Performance drivers - Diabetes ...
Breaking Biology Technology:Ralco Announces Primary Sponsorship of Ralco Enrichment Center at Lyon County Fair 2Biosimulation Market Worth 2,107.99 Million USD by 2020 2Biosimulation Market Worth 2,107.99 Million USD by 2020 3Biosimulation Market Worth 2,107.99 Million USD by 2020 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 5Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 6Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 7
... YORK, April 7, 2011 Reportlinker.com announces that ... its catalogue: Industrial Biotechnology China ... The Chinese central government was reported ... emission-reduction" in the Twelfth Five-Year (2011-2015) Plan. This ...
... in Spanish . Tekniker-IK4 is ... based on carbonaceous nanoparticles for application to sectors such ... to detect the pressure of the driver,s foot, a ... capacity, self-lubricating engine components, a low-cost and fire-resistant construction ...
... Cephalon, Inc. (Nasdaq: CEPH ) has scheduled ... results for 5:00 p.m. EDT on Tuesday, May 3, 2011. ... 2011 results will be distributed by PRNewswire4:50 p.m. EDT , ... toConference Code Number 67208985:00 p.m. EDT , Conference call begins ...
Cached Biology Technology:Reportlinker Adds Industrial Biotechnology China News 1103 2Reportlinker Adds Industrial Biotechnology China News 1103 3New materials based on carbon nanoparticles 2
... that oxidative stress is involved in atherosclerosis, ... is the condition in which an imbalance ... leading to the damage of a cell. ... is through several antioxidant systems4 that include ...
... Micro Kit provides a fast and simple procedure ... and other detergents from small samples of protein. ... protein resin as an ion exchanger. Each column ... either acidic or basic protein.A complete kit for ...
... cells form from a hematopoietic stem cells ... to the bone surface and lowering the ... around 4.5. The bone mineral is then ... and function is controlled primarily by Macrophage ...
... Receptor-gamma (PPAR) is a member of ... transcription factors that heterodimerize with retinoic ... in the regulation of glucose and ... class of anti-diabetic agents called thiazolidinediones ...
Biology Products: