jueves, 15 de agosto de 2013

Fossils - Fosiles: Declivolithus Ordovician Trilobite - Links





Declivolithus Ordovician Trilobite






 
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Declivolithus cf. alfredi



Trilobites Order Asaphida, Family Trinucleidae



Geological Time: Late Ordovician



Size (25.4 mm = 1 inch): 50 mm



Fossil Site: Ourzazate, Morocco

Description: This is an unusual trilobite from the late Ordovician of Morocco known as Declivolithus. First described from the Czech Republic, this one is most likely the same species. Note the ornamentation to the cephalic rim. To what purpose were the crenulations? Possibly they served some hydrodynamic function, helping to hold the trilobite on the seafloor in the presence of a current. Whatever the purpose, this is a dramatic example of the taxon, and q very 3-D example of this unusual Trinucelid.













Fossils - Fosiles: Declivolithus Ordovician Trilobite - Links




Trilobite

Crinoid - Crinoide


Fishes - Peces


Various - Varios


Amber - Ámbar
 

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