The bivalve fauna from the Fezouata Formation (Lower Ordovician) of Morocco and its significance for palaeobiogeography, palaeoecology and early diversification of bivalves

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F16%3A00000041" target="_blank" >RIV/00025798:_____/16:00000041 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/journal/00310182/460" target="_blank" >http://www.sciencedirect.com/science/journal/00310182/460</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.palaeo.2015.12.016" target="_blank" >10.1016/j.palaeo.2015.12.016</a>

Result language

angličtina

Original language name

The bivalve fauna from the Fezouata Formation (Lower Ordovician) of Morocco and its significance for palaeobiogeography, palaeoecology and early diversification of bivalves

Original language description

Early Ordovician bivalves are rare worldwide; thus discovery of any newbivalve fauna of this age presents an exceptional event. A new abundant bivalve fauna from the Fezouata Formation of Morocco includes nine genera; Alococoncha?, Babinka, Cardiolaria?, Coxiconchia, Ekaterodonta, Glyptarca, Cienagomya?, Praenucula?, and Redonia. Bivalves from the Fezouata Formation show close affinities with assemblages of comparable age known fromthe Montagne Noire as well as withMiddle Ordovician bivalve faunas fromPerunica, Iberia, Avalonia and Australia. Some genera are in commonwith Early Ordovician bivalves from South American West Gondwana (Argentina and Bolivia). The Montagne Noire and Morocco played an important role in the distribution of important groups of bivalves to other regions of European peri-Gondwana (Armorica, Perunica, Iberia) and probably similarly during theMiddle Ordovician for the expansion of bivalves through Avalonia to other continents like Baltica and Laurentia. Quantitatively, the Early Ordovician bivalve fauna of Morocco is dominated by heteroconchs associated with protobranchs and pteriomorphs. The dominance of heteroconchs and poor evidence of pteriomorphs are conspicuous here and both of these features characterise a high latitude bivalve fauna. Exclusively infaunal burrowers (filter feeders and deposit feeders) are present in siliciclastic facies of the Fezouata Formation. The genus Redonia completely dominates the Early Ordovician bivalve fauna ofMorocco. Functionalmorphology ofmuscle scars in Early Ordovician and Cambrian bivalves is compared. Two conspicuous complexmuscular systems, decisive for an efficient burrowing, appear already in the Early Ordovician. Myophoric buttress in Early Ordovician protobranchs and heteroconchs seems to be an important character for serving as the attachment point for muscles, which helped to hold the visceral sac during burrowing.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Palaeogeography, Palaeoclimatology, Palaeoecology

ISSN

0031-0182

e-ISSN

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Volume of the periodical

460

Issue of the periodical within the volume

October

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

155-169

UT code for WoS article

000383296200013

EID of the result in the Scopus database

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