Navigation Links
Ancient blob-like creature of the deep revealed by scientists
Date:8/4/2010

A unique blob-like creature that lived in the ocean approximately 425 million years ago is revealed in a 3D computer model in research published today in the journal Biology Letters. The model is helping researchers to understand what primitive species on early Earth looked like and how they might have evolved into the types of creatures that are on Earth today.

The scientists, from Imperial College London, have developed a detailed 3D model of the only known fossilised specimen in the world of a creature called Drakozoon. The specimen was found by one of the team approximately 6 years ago in the Herefordshire Lagersttte, one of England's richest deposits of soft-bodied fossils.

Drakozoon lived in the ocean during the Silurian Period, 444 to 416 million years ago, and today's model hints at how it lived.

The research reveals that Drakozoon was a cone-shaped, blob-like creature with a hood and it probably had a leathery exterior skin. It appears to have survived in the ocean by attaching itself to hard surfaces such as rock. It was approximately 3mm long, and used filament-bearing tentacles to catch and eat organic particles in seawater. It pulled its hood down over its body for protection against predators, pulling it back again to expose its tentacles when danger passed.

Dr Mark Sutton, from the Department of Earth Science and Engineering at Imperial College London, says:

"Excitingly, our 3D model brings back to life a creature that until recently no one knew even existed, and provides us with a window into the life of Drakozoon. We think this tiny blob of jelly survived by clinging onto rocks and hard shelled creatures, making a living by plucking microscopic morsels out of seawater. By looking at this primitive creature, we also get one tantalising step closer to understanding what the earliest creatures on Earth looked like."

Scientists have debated what the first relatives of all creatures on Earth may have resembled and how their bodies evolved. Some scientists think the creatures had repeated units, similar to a caterpillar with its many segments and legs, while others think that their bodies were structured in more free-form ways, similar to slugs.

In today's study, the researchers analysed their 3D model and discovered that Drakozoon had eight deep ridges on either side of its body. They suggest that these deep ridges are the genetic remnants from a time when Drakozoon had a body made of repeated units, supporting the theory that the earliest creatures on Earth were also made of repeated units.

The study shows that Drakozoon was an early member of a major group of invertebrate species called lophophorates. The best known lophophorates are the brachiopods, a type of spineless shellfish that are some of the most common fossils from the Silurian Period. The team found their Drakozoon specimen clinging onto the fossilised shell of a brachiopod.

The researchers created their 3D model by physically slicing a fossil into 200 pieces. These pieces were individually photographed and the images were fed into a computer, which generated the 3D model for analysis by the scientists.

The researchers say it is very rare to find ancient soft bodied creatures intact because they normally decompose before they can be preserved in sediment. The soft bodied Drakozoon was perfectly preserved because it lived in an area that was covered in volcanic ash, following a volcanic eruption that instantly entombed it and other creatures living with it, keeping it intact for 425 million years.


'/>"/>

Contact: Colin Smith
cd.smith@imperial.ac.uk
44-207-594-6712
Imperial College London
Source:Eurekalert

Related biology news :

1. Epileptic seizures may be linked to an ancient gene family
2. Ancient DNA identifies donkey ancestors, people who domesticated them
3. UBC researcher discovers ancient stress hormone in pre-historic fish
4. New research on rapidly disappearing ancient plant offers hope for species recovery
5. New research on rapidly-disappearing ancient plant offers hope for species recovery
6. Ancient birds from North America colonized the South
7. Man-made global warming started with ancient hunters
8. Scientists discover ancient viral invasion that shaped human genome
9. Revealing the ancient Chinese secret of sticky rice mortar
10. Lake-bed trails tell ancient fish story
11. Research shows part of Alaska inundated by ancient megafloods
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/31/2016)... PROVIDENCE, R.I. , March 31, 2016  Genomics ... leadership of founding CEO, Barrett Bready , M.D., ... addition, members of the original technical leadership team, including ... Vice President of Product Development, Steve Nurnberg and Vice ... have returned to the company. Dr. Bready ...
(Date:3/23/2016)... March 23, 2016 ... Sicherheit Gesichts- und Stimmerkennung mit Passwörtern ... (NASDAQ: MESG ), ein führender Anbieter ... Unternehmen mit SpeechPro zusammenarbeitet, um erstmals dessen ... wird die Möglichkeit angeboten, im Rahmen mobiler ...
(Date:3/22/2016)... , PROVO and ... Newborn Screening Ontario (NSO), which operates the highest sample ... molecular testing, and Tute Genomics and UNIConnect, leaders in ... respectively, today announced the launch of a project to ... (NGS) testing panel. NSO has been ...
Breaking Biology News(10 mins):
(Date:5/18/2016)... ... May 18, 2016 , ... Every day, more than ... asthma complications.* Costing more than $56 billion in direct costs annually, asthma remains ... too many, the suffering associated with uncontrolled asthma can be overwhelmingly disproportionate and ...
(Date:5/17/2016)... ... 2016 , ... DryLet, LLC, a biotechnology company providing an ... be showcasing ManureMagic™ at booth V1061 at the World Pork Expo, June 8-10 ... last year and more recently made news as the results were released from ...
(Date:5/17/2016)... , May 17, 2016 ... in Basel, Switzerland announced ... inhibitor of P38 mitogen-activated protein kinase. ... Strekin will build the necessary research foundation ... in which MAP Kinases play fundamental roles. Pamapimod ...
(Date:5/17/2016)... ... May 17, 2016 , ... New tests that go ... country promising more specific information that both the patient and doctor want and need ... tests, presented at the American Urological Association’s annual meeting in San Diego, involve using ...
Breaking Biology Technology: