Russian Ordovician Trilobite Prepared in Ventral Mode

Asaphus sp.

Trilobites Order Asaphida, Family Asaphidae

Geological Time: Middle Ordovician

Size: (25.4mm=1 inch): Ventral: 60 mm long by 40 mm wide on a 170 by 70 mm by 105 mm tall matrix

Fossil Site: Wolchow River Region, St Petersburg, Russia

Code: RUT924

Price: $225.00 - sold


Russian Asaphus TrilobiteDescription: A well-inflated example of a of medium-eyestalked member of the Asaphidae, this is most likely Asaphus kotlukovi. This particular has been prepared ventrally to allow you to see the detail from within. Notice the hypostome, or anchor for the mouthparts. This type of hypostome is typical of the predatory types of trilobites.. The region in which these trilobites lived was subject to dramatic changes in salinity and turbidity, and the trilobites were able to make rapid (geologically speaking) evolutionary adjustments. These adjustments were thought to be able to allow them to see both predator and prey more easily. These are well-displayed on a large block of matrix which has a flattened edge to allow it to stand upright.

Also see: Russian Trilobites

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