Pliomera fisheri, Asaphus expansus Mid Ordovician St. Petersburg region, Russia What a story this fossil tells...a rare Pliomera fisheri laying atop an Asaphus expansus. For hundreds of millions of years these two species have shared a burial place, perhaps caused by the seasonal drying of a tidal estuary during the mid-Ordovician. Includes a new copy of Ordovician Trilobites of the St. Petersburg Region, Russia by the Petersburg Paleontological Laboratory. Matrix measures 4 ¾ x 2 x 2in, Pliomera measures 2 ¼in, Asaphus measures 1 ¼in
Pliomera fisheri, Asaphus expansus Mid Ordovician St. Petersburg region, Russia What a story this fossil tells...a rare Pliomera fisheri laying atop an Asaphus expansus. For hundreds of millions of years these two species have shared a burial place, perhaps caused by the seasonal drying of a tidal estuary during the mid-Ordovician. Includes a new copy of Ordovician Trilobites of the St. Petersburg Region, Russia by the Petersburg Paleontological Laboratory. Matrix measures 4 ¾ x 2 x 2in, Pliomera measures 2 ¼in, Asaphus measures 1 ¼in
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
