Navigation Links
Oldest species of a marine mollusc discovered
Date:2/22/2011

An international research team, with Spanish participation, has discovered a new species of mollusc, Polyconites hadriani, in various parts of the Iberian Peninsula. The researchers say this species, which is the oldest in its genus, adapted to the acidification of the oceans that took place while it was in existence. This process could now determine the evolution of modern marine systems.

The new species Polyconites hadriani, which was discovered in 2007, has been crowned the oldest in the Polyconites genus of the family Polyconitidae (rudists), a kind of extinct sea mollusc. To date, scientists had thought that the oldest mollusc in this genus was Polyconites verneuili.

"P. hadriani is similar in shape to P. verneuili, but it is smaller (with a 30mm smaller diameter), and with a thinner calcite layer to its shell (around 3mm difference)", Eullia Gili, one of the authors of the study and a researcher at the Department of Geology of the Autonomous University of Barcelona (UAB), tells SINC.

The new species was found in several parts of the Iberian Peninsula in the Maestrat basin, the Vasco-Cantbrica basin, to the south of the Lusitania basin and in the Cordillera Prebtica mountain range, "where it accumulated in dense conglomerations along the banks of the carbonate marine platforms of the Lower Aptian period (114 million years ago)", says Gili.

"This recognition of P. hadriani resolves the lengthy uncertainty about the identity of these polyconitids of the Lower Aptian", the researcher says in the study, which has been published in the Turkish Journal of Earth Sciences.

Adaptation to acidification of the oceans

Gili says the Lower Aptian was a convulsive period, during which significant climate change took place. P. hadriani existed at the time when the first oceanic anoxic event of the Cretaceous took place (between 135 and 65 million years ago). This event was characterised by a "lack of oxygen on the seabed, which led to the mass burial of organic carbon and climate cooling".

"The thicker calcite layer of the shell of this new species compared with that of its predecessor (of the Horiopleura genus), could have helped it adapt better to life in colder waters, which were more acidic due to the increased solubility of atmospheric CO2", the geologist explains.

The researcher adds: "The response of these rudists to ocean acidification could apply to the future evolution of today's marine ecosystems, above all among those kinds of organisms that form their shells or skeletons from calcium carbonate".


'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Related biology news :

1. Researchers uncover worlds oldest fossil impression of a flying insect
2. 4,000-year-old coral beds among worlds oldest living things, prof says
3. Kent State University Professor C. Owen Lovejoy helps unveil oldest hominid skeleton
4. Ardi displaces Lucy as oldest hominid skeleton
5. Dinosaur-chewing mammals leave behind oldest known tooth marks
6. Oldest Earth mantle reservoir discovered
7. Scientists discover oldest evidence of human stone tool use and meat-eating
8. UNH researcher helps identify key reproductive hormone in oldest vertebrate
9. Oldest evidence of dinosaurs found in Polish footprints
10. VTT to study one of worlds oldest beers
11. A new dinosaur species, Pachyrhinosaur lakustai, unveiled from Pipestone Creek, Alberta, Canada
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Oldest species of a marine mollusc discovered
(Date:11/16/2016)... , Nov. 16, 2016 Sensory Inc ... and security for consumer electronics, and VeriTran ... and retail industry, today announced a global partnership ... way to authenticate users of mobile banking and ... TrulySecure™ software which requires no specialized biometric ...
(Date:6/27/2016)... Research and Markets has announced the addition ... to their offering. The report ... to grow at a CAGR of 12.28% during the period 2016-2020. ... in-depth market analysis with inputs from industry experts. The report covers ... The report also includes a discussion of the key vendors operating ...
(Date:6/20/2016)... -- Securus Technologies, a leading provider of civil ... investigation, corrections and monitoring announced that after exhaustive ... the final acceptance by all three (3) Department ... (MAS) installed. Furthermore, Securus will have contracts for ... October, 2016. MAS distinguishes between legitimate wireless device ...
Breaking Biology News(10 mins):
(Date:12/5/2016)... (PRWEB) , ... December 05, 2016 , ... ... MA to soon resume cervical and lumbar disc production, company President, Jake Lubinski ... surgeons who are implanting the AxioMed disc in Cologne and Karlsruhe to discuss ...
(Date:12/5/2016)... 5, 2016 /PRNewswire/ - Resverlogix Corp. ("Resverlogix" or ... Data and Safety Monitoring Board (DSMB) for the ... disease (CVD) patients has completed a second planned ... continue as planned without any modifications. The DSMB ... safety or efficacy concerns were identified. The DSMB ...
(Date:12/5/2016)... Research and Markets has announced the ... Technologies, Markets and Companies" to their offering. ... , , ... human genome variations, development of sequencing technologies, and their applications. ... companies developing them. Various applications of sequencing are described including ...
(Date:12/4/2016)... San Francisco, CA (PRWEB) , ... December 03, ... ... scientific grants to ground-breaking microbiome studies. A microbiome impact grant award has been ... study the effect of heavy smoking and drinking on the oral microbiome. Grant ...
Breaking Biology Technology: