Asaphus punctatus Russian Trilobite

Asaphus punctatus

Class Trilobita; Order Asaphida; Superfamily Asaphoidea; Family Asaphidae

Geological Time: Middle Ordovician; Asery Horizon

Size: 82 mm

Fossil Site: Asery level, St. Petersburg region, Wolchow river, Russia

Asaphus punctatusDescription: A well-inflated example of a high-eyestalked member of the Asaphidae, this is Asaphus punctatus. The genus Asaphus underwent some remarkable adaptations to changes in turbidity during the Ordovician, with this one presumably arising in a time of increased turbidity. These adjustments were thought to be able to allow them to see both predator and prey more easily. The taxon has variable eyestalk height, with this one having higher extensions than is average.

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Asaphus punctatus Russian Trilobite

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