Navigation Links
New home for an 'evolutionary misfit'
Date:8/17/2014

One of the most bizarre-looking fossils ever found - a worm-like creature with legs, spikes and a head difficult to distinguish from its tail has found its place in the evolutionary Tree of Life, definitively linking it with a group of modern animals for the first time.

The animal, known as Hallucigenia due to its otherworldly appearance, had been considered an 'evolutionary misfit' as it was not clear how it related to modern animal groups. Researchers from the University of Cambridge have discovered an important link with modern velvet worms, also known as onychophorans, a relatively small group of worm-like animals that live in tropical forests. The results are published in the advance online edition of the journal Nature.

The affinity of Hallucigenia and other contemporary 'legged worms', collectively known as lobopodians, has been very controversial, as a lack of clear characteristics linking them to each other or to modern animals has made it difficult to determine their evolutionary home.

What is more, early interpretations of Hallucigenia, which was first identified in the 1970s, placed it both backwards and upside-down. The spines along the creature's back were originally thought to be legs, its legs were thought to be tentacles along its back, and its head was mistaken for its tail.

Hallucigenia lived approximately 505 million years ago during the Cambrian Explosion, a period of rapid evolution when most major animal groups first appear in the fossil record. These particular fossils come from the Burgess Shale in Canada's Rocky Mountains, one of the richest Cambrian fossil deposits in the world.

Looking like something from science fiction, Hallucigenia had a row of rigid spines along its back, and seven or eight pairs of legs ending in claws. The animals were between five and 35 millimetres in length, and lived on the floor of the Cambrian oceans.

A new s
'/>"/>

Contact: Craig Brierley
craig.brierley@admin.cam.ac.uk
44-122-376-6205
University of Cambridge
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Leading evolutionary scientist to discuss how genome of bacteria has evolved
2. An evolutionary surprise
3. A University of Tennessee professors hypothesis may be game changer for evolutionary theory
4. Scientists trace evolutionary history of what mammals eat
5. Battle of the sexes offers evolutionary insights
6. Revolutionary project will obtain entire genome sequences in fight against Alzheimers
7. Sandia seeks commercial partners for revolutionary SpinDx medical diagnostic tool
8. Tamarisk biocontrol efforts get evolutionary boost
9. Researchers dig through the gene bank to uncover the roots of the evolutionary tree
10. WHOI scientists/engineers partner with companies to market revolutionary new instruments
11. Drivers of marine biodiversity: Tiny, freeloading clams find the key to evolutionary success
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New home for an 'evolutionary misfit'
(Date:10/14/2014)... CA – October 14, 2014 – Scientists from The ... from the National Institutes of Health (NIH) to lead ... virus-induced hemorrhagic fever disease in Africa. The study aims ... why some patients die, while others survive the inflection. ... understand the basic mechanism of how Lassa fever virus ...
(Date:10/14/2014)... led by the Chinese Academy of Agricultural Sciences in ... a brief genomic history of tomato breeding, based on ... The C.M. Rick Tomato Genetics Resource Center at UC ... providing seed of both cultivated tomato varieties and related ... first tomato genome sequence completed just two years ago, ...
(Date:10/14/2014)... 2014 – Over the past decades, we have seen ... meet the needs of infants for social contact and ... to thrive. , Infancy and childhood are ... cortex. A generation of research suggests that enriched environments, ... and cognitive function. In contrast, deprivation and stress may ...
Breaking Biology News(10 mins):Scripps Research Institute team receives $6.6 million to investigate deadly Lassa virus 2Institutional rearing may increase risk attention-deficit disorder 2
... , This release is available in German . ... thumb and little finger - therefore react faster than the middle ... on each side. Through targeted learning, this speed handicap can be ... Plasticity Lab at the Institute for Neuroral Computation) report in the ...
... RIVERSIDE, Calif. What are you really eating when ... same heat when burned? Do twins have similar fingerprints? How ... Hundreds of K-12 students from 33 local schools will ... Science and Engineering Fair at the University of California, Riverside, ...
... took a long time to kill 90 percent of Earth,s ... report. It shows that mass extinctions need not be ... of Cincinnati, and 13 colleagues have produced a high-resolution look ... Island in the Canadian Arctic. Their analysis, published today ...
Cached Biology News:Why the middle finger has such a slow connection 2Why the middle finger has such a slow connection 3Fair to bring future scientists and engineers to UC Riverside 2Global extinction: Gradual doom as bad as abrupt 2Global extinction: Gradual doom as bad as abrupt 3
(Date:10/20/2014)... Local veterinary surgeon, Dr. Tim McCarthy is seeking ... stem cells for dogs with osteoarthritis. Dr. McCarthy has ... clinical stem cell therapy for 7 years. The ultimate ... single injection of donor stem cells into one or ... inflammation in the treated joints. , Candidates for ...
(Date:10/19/2014)... 2014 OCTOBER 20-22, 2014: ... ABIM will take place at the ... ABIM 2014 is now available at ... companies and organizations from all over the ... on the latest products and developments on ...
(Date:10/19/2014)... The Asia-Pacific Bromine Market report defines and segments ... forecast of revenue. , Browse through the TOC ... get an idea of the in-depth analysis provided. ... in the Asia-Pacific bromine market, and is supported ... http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , Bromine is a volatile and ...
(Date:10/19/2014)... Asia-Pacific Speech Analytics market report defines and segments the ... of revenue. This market is estimated to grow from ... at a Compound Annual Growth Rate (CAGR) of 23.9% ... of the Asia-Pacific Speech Analytics market report to get ... provides a glimpse of the segmentation in the market, ...
Breaking Biology Technology:Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4
... Inc. (NTI(R)) (Nasdaq: NTII ), today announced ... GmbH (Merz) for sales,by Merz and its marketing ... disease for the quarter ended September 30,2007. Under ... payments on sales of Memantine by Merz and ...
... improved but still flawed government-wide plan for nanotechnology ... system. Federally-funded studies essential to managing possible ... by a top-down strategy tied to projected commercialization, ... decision-making process. , The National Nanotechnology ...
... collaboration between researchers at the National Institute of Standards ... Kentucky potentially offers a low-cost way to mass produce ... for a wide range of applications including flexible displays, ... field diagnostics. , In a paper posted this week,* ...
Cached Biology Technology:Neurobiological Technologies Reports $2.1 Million Quarterly Payment for Sales of Memantine 2Federal nanotech risk research plan still comes up short 2Directed self-ordering of organic molecules for electronic devices 2
... PEP-152 is a 17 amino acid synthetic peptide whose sequence is ... (amino to carboxy terminus): C - N(217) - Q - ... - A - T - P - N - Y - ... may be used for neutralization and control experiments with the polyclonal ...
... for which no antibody exists? Having difficulty generating ... a variety of pharmaceutical, biotech and academic researchers ... technology and expertise in antibody generation to work ... RabMAb development technology , High affinity and high ...
... The Rapid-Screen cDNA Library Panels were designed ... three sets of PCRs to identify the ... is performed in a 96-well "Master Plate," ... 5,000 clones. Having identified the positive well(s) ...
... Library Panels were designed for full-length gene ... PCRs to identify the desired cDNA clone. ... a 96-well "Master Plate," where each well ... identified the positive well(s) by gel electrophoresis ...
Biology Products: