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CAIS ARCHAEOLOGICAL & CULTURAL NEWS©

ARCHAEOLOGICAL & CULTURAL NEWS OF THE IRANIAN WORLD

 

Brachiopod Fossils Identified in Sabzevar

 

31 August 2006

 

 

 

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LONDON, (CAIS) -- Archeologists and Paleozoologists believe that fossils found in a village near the city of Sabzevar in northeastern Khorasan province belong to marine animals with bivalve shells.


Announcing this, director general of Sabzevar Cultural Heritage, Handicrafts and Tourism Department said brachiopod is the scientific term used to refer to these marine invertebrates which have bivalve dorsal and ventral shells enclosing a pair of tentacles, arm like structures that are used to sweep minute food particles into the mouth.


Brachiopods lived about two billion years ago in a mountain located in Babalangar village of Khoushab district in northwestern Sabzevar, Ali Aldaghi according to ISNA Persian Service.


He explained that sea creatures including lampshell, reefs and sponge were killed en masse due to lack of oxygen in a time between 150 and 200 million years ago and their remains were turned into fossils.


Also, an official in charge of archeological programs of the department, Mohammad Abdollahzadeh Sani, stated that a group comprising the departments experts and biologists from Sabzevar Instructor Training University has studied the fossils since 2005.


He added that the research findings would be announced in the near future.

 

The earliest unequivocal brachiopods in the fossil record occur in the early Cambrian, with the hingeless, inarticulate forms appearing first, followed soon thereafter by the hinged, articulate forms. Putative brachiopods are also known from much older upper Neoproterozoic strata, although the assignment remains uncertain. Brachiopods are extremely common fossils throughout the Paleozoic. The major shift came with the Permian extinction. Before this extinction event, brachiopods were more numerous and diverse than bivalve mollusks. Afterwards, in the Mesozoic, their diversity and numbers were drastically reduced, and they were largely replaced by bivalve mollusks. Mollusks continue to dominate today, and the remaining orders of brachiopods survive largely in fringe environments of more extreme cold and depth.

 

 

 

 

 

 

 

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Extracted From/Source: Iran Daily

Please note the above-news is NOT a "copy & paste" version from the mentioned-source. The news/article above has been modified with the following interventions by CAIS: Spelling corrections; -Rectification and correction of the historical facts and data; - Providing additional historical information within the text; -Removing any unnecessary, irrelevant & repetitive information.

     All these measures have been taken in order to ensure that the published news provided by CAIS is coherent, accurate and suitable for academics and cultural enthusiasts who visit the CAIS website.

 

 

 

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