Navigation Links
Origin of claws seen in 390-million-year-old fossil
Date:2/5/2009

New Haven, Conn. A missing link in the evolution of the front claw of living scorpions and horseshoe crabs was identified with the discovery of a 390 million-year-old fossil by researchers at Yale and the University of Bonn, Germany.

The specimen, named Schinderhannes bartelsi, was found fossilized in slate from a quarry near Bundenbach in Germany, a site that yields spectacularly durable pyrite-preserved fossils findings collectively known as the Hunsrck Slate. The Hunsrck Slate has previously produced some of the most valuable clues to understanding the evolution of arthropods including early shrimp-like forms, a scorpion and sea spiders as well as the ancient arthropods trilobites.

"With a head like the giant Cambrian aquatic predator Anomalocaris and a body like a modern arthropod, the specimen is the only known example of this unusual creature," said Derek Briggs, director of Yale's Peabody Museum of Natural History and an author of the paper appearing in the journal Science.

Scientists have puzzled over the origins of the paired grasping appendages found on the heads of scorpions and horseshoe crabs. The researchers suggest that Schinderhannes gives a hint. Their appendages may be an equivalent to those found in the ancient predatory ancestor, Anomalocaris even though creatures with those head structures were thought to have become extinct by the middle of the Cambrian Period, 100 million years before Schinderhannes lived.

The fossil's head section has large bulbous eyes, a circular mouth opening and a pair of segmented, opposable appendages with spines projecting inward along their length. The trunk section is made up of 12 segments, each with small appendages, and a long tail spine. Betwe
'/>"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Study on origin of mutation that causes fatal familiar insomnia
2. Earths original ancestor was LUCA, not Adam nor Eve
3. Synthetic virus supports a bat origin for SARS
4. What is the origin of ethics?
5. Origin of root offshoots revealed
6. Scientists trace molecular origin of proportional development
7. Scientists develop new method to investigate origin of life
8. How secondary sex characters can drive the origin of species
9. Tahitian vanilla originated in Maya forests, says UC Riverside botanist
10. Early origins of maize in Mexico
11. Genome sequence of small marine creature sheds light on vertebrate origins
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Origin of claws seen in 390-million-year-old fossil
(Date:10/30/2014)... suite of technologies that can be used to enhance ... everything from search and rescue to service dogs to ... computer-mediated communication between humans and dogs that opens the ... and sending them clear and unambiguous cues in return," ... science at NC State and co-lead author of a ...
(Date:10/29/2014)... Research suggesting air pollutants released by unconventional oil and ... US is published today in the open access journal ... sulfide and formaldehyde were found. The study is the ... who live near production sites and could be used ... and gas come from reserves that do not readily ...
(Date:10/29/2014)... (October 29, 2014, Beaverton, OR) New research ... 11th International Conference in Houston, TX showed for ... eliminate HPV infection in women using a readily ... The study, presented by Dr. Judith A. Smith, ... Gynecology and Reproductive Sciences at The University of ...
Breaking Biology News(10 mins):New tech aims to improve communication between dogs and humans 2Air quality and unconventional oil and gas sites 2Air quality and unconventional oil and gas sites 3HPV infections in women eradicated by AHCC, Japanese mushroom extract 2
... of Parkinson,s disease patients had insufficient levels of vitamin ... of Medicine. The fraction of Parkinson,s patients ... than patients with Alzheimer,s disease (41 percent) or healthy ... in the October issue of Archives of Neurology ...
... of their chimpanzee relatives, bonobo societyin which females enjoy ... of image. While chimpanzee males frequently band together to ... believed to restrict what meat they do eat to ... according to a study, reported in the October 14th ...
... of the brain can come under attack in patients with ... with an MS-like disease, the brain,s response to a protein ... cord or cerebellum that comes under fire. The studyfrom researchers ... and Washington University in St. Louiswill be published online on ...
Cached Biology News:Lack of vitamin D linked to Parkinson's disease 2Lack of vitamin D linked to Parkinson's disease 3Despite 'peacenik' reputation, bonobos hunt and eat other primates too 2
(Date:10/30/2014)... Spartan Bioscience announced today that Health Canada ... It detects CYP2C19 genetic mutations in less than 60 ... RX CYP2C19 System is the first near-patient DNA test ... Due to the system’s ease of use, Health Canada ... professionals such as doctors, nurses, pharmacists, and laboratory technicians, ...
(Date:10/30/2014)... A new report, commissioned by BioCrossroads and conducted by ... at Indiana,s capital market and ... time frames: 1993 to 2002 and 2003 to 2013.  ... investment growth.  The Life Science Innovation Capital in ... innovation dollars as well as an increase in life ...
(Date:10/27/2014)... (PRWEB) October 27, 2014 The ... by Type (High & Medium), Sub-type (Primary & ... Processing, Infrastructure & Transportation & Power Generation) - ... the GIS market with analysis and forecasting of ... Market Data Tables with 52 Figures spread through ...
(Date:10/27/2014)... (PRWEB) October 27, 2014 New ... SoundConnect , an industry leading unified communication ... partners and agents to deliver cloud-based audio and ... growth opportunities. , With SoundConnect’s Q4 incentive ... twenty-five video and/or web conferencing licenses sold, now ...
Breaking Biology Technology:Health Canada approves first near-patient DNA test for personalized medicine 2Health Canada approves first near-patient DNA test for personalized medicine 3New report shows Indiana's gains in life sciences innovation capital outpace the nation 2New report shows Indiana's gains in life sciences innovation capital outpace the nation 3New report shows Indiana's gains in life sciences innovation capital outpace the nation 4New report shows Indiana's gains in life sciences innovation capital outpace the nation 5Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 2Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 3Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 4SoundConnect Unveils Q4 Partner Incentives 2
... Data and User Customization -- BUDAPEST, Hungary, August 20, 2010 ... ... ... first_result; // Results are keyed by longUrl, so we need to grab the first one. for ...
... Confirms Clinical Efficacy and Safety of Radioembolisation Using... -- BRUSSELS, August 19, 2010 ... ... --> ... = ,; var first_result; // Results are keyed by longUrl, so we need to grab the ...
... Silence Therapeutics plc (AIM: SLN), a leading international RNAi ... Quark Pharmaceuticals, Inc. ("Quark"), has announced the grant of ... license to develop and commercialise QPI-1002, a p53 temporary ... Quark is currently conducting a Phase II clinical ...
Cached Biology Technology:ChemAxon Extends chemicalize.org Free Service With Predicted Data and User Customization 2ChemAxon Extends chemicalize.org Free Service With Predicted Data and User Customization 3ChemAxon Extends chemicalize.org Free Service With Predicted Data and User Customization 4ChemAxon Extends chemicalize.org Free Service With Predicted Data and User Customization 5ChemAxon Extends chemicalize.org Free Service With Predicted Data and User Customization 6Phase III Randomised Controlled Trial Confirms Clinical Efficacy and Safety of Radioembolisation Using 90Y-resin Microspheres for Patients With Inoperable Colorectal Cancer Liver Metastases That Have Failed Chemotherapy 2Phase III Randomised Controlled Trial Confirms Clinical Efficacy and Safety of Radioembolisation Using 90Y-resin Microspheres for Patients With Inoperable Colorectal Cancer Liver Metastases That Have Failed Chemotherapy 3Phase III Randomised Controlled Trial Confirms Clinical Efficacy and Safety of Radioembolisation Using 90Y-resin Microspheres for Patients With Inoperable Colorectal Cancer Liver Metastases That Have Failed Chemotherapy 4Phase III Randomised Controlled Trial Confirms Clinical Efficacy and Safety of Radioembolisation Using 90Y-resin Microspheres for Patients With Inoperable Colorectal Cancer Liver Metastases That Have Failed Chemotherapy 5Phase III Randomised Controlled Trial Confirms Clinical Efficacy and Safety of Radioembolisation Using 90Y-resin Microspheres for Patients With Inoperable Colorectal Cancer Liver Metastases That Have Failed Chemotherapy 6Phase III Randomised Controlled Trial Confirms Clinical Efficacy and Safety of Radioembolisation Using 90Y-resin Microspheres for Patients With Inoperable Colorectal Cancer Liver Metastases That Have Failed Chemotherapy 7Silence Therapeutics' Partner Quark Signs Exclusive Option Agreement With Novartis for Development and Commercialisation of QPI-1002 2
Rabbit polyclonal to GPCR G2A ( Abpromise for all tested applications). entrezGeneID: 29933 SwissProtID: Q9UNW8...
... been developed for use with immunohistochemical ... nonspecific background staining due to endogenous ... peroxidase with hydrogen peroxide. This ... with additional novel components to further ...
Rabbit polyclonal to Wilms Tumor Protein ( Abpromise for all tested applications). entrezGeneID: 7490 SwissProtID: P19544...
Ku80 Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Biology Products: