Trilobite Pseudobaselicus planus
SKU:
ITEM # TRILO-Russia-0003
$1,000.00
$1,000.00
Middle Ordovician - 500 mya
Asery Level, Vilpovitsky Quarry
Wolchow Plateau
St. Petersburg, Russia
ITEM # TRILO-Russia-0003
This is an excellent example of the trilobite Pseudobaselicus planus from the Middle Ordovician Upper Asery Level deposits near St. Petersburg, Russia.
During the Ordovician, what is now Eastern Europe was a shallow inland sea. The fauna was rich and diverse, and included the early vertebrates. This was the heart of the age of the trilobite, a time when trilobites were not only diverse, but had undergone adaptations yielding striking morphologies. The diversity of the Russian trilobites, available across so many families and forms, the exquisite preservation in three-dimensional relief, expert preparation, affordability, and the explicit exotic expressions of nature all combine to make Russian trilobites a ubiquitous favorite of collectors.
The remains of this ancient Ordovician fauna are abundant in the Baltic region, and the city of Saint Petersburg literally sets on a bed of Ordovician limestone. Many Ordovician outcrops occur south of Saint Petersburg, and far and away the most prolific yield of trilobites comes from the so-called Asery horizon that is some 20 meters thick near the Wolchov River. Some 20 genera and 100 species are found in exquisite, non-compressed preservation. Moreover, the limestone matrix (in a manner similar to that of the Devonian strata in Oklahoma is relatively soft, enabling an expert with modern preparatory equipment to produce finished fossils that can seem life-like. The trilobite exoskeletons generally are extremely well preserved, and are a milk-chocolate color that contrasts well against the lighter limestone. Horizons above and below show the progenitors and descendents of trilobites from the Asery level, adding diversity to the trilobites from the region, and adding to a wonderful story of decent with modification. Some dozen trilobite families are represented, including Asaphidae, Illaenidae, Cheiruridae, Encrinuridae, Raphiophoridea, Lichadidae, Remopleuridae, Harpedidea and Phacopidae.
This specimen measures approximately 3 3/16 inches long on a matrix measuring 7 inches by 6 3/4 inches.
Asery Level, Vilpovitsky Quarry
Wolchow Plateau
St. Petersburg, Russia
ITEM # TRILO-Russia-0003
This is an excellent example of the trilobite Pseudobaselicus planus from the Middle Ordovician Upper Asery Level deposits near St. Petersburg, Russia.
During the Ordovician, what is now Eastern Europe was a shallow inland sea. The fauna was rich and diverse, and included the early vertebrates. This was the heart of the age of the trilobite, a time when trilobites were not only diverse, but had undergone adaptations yielding striking morphologies. The diversity of the Russian trilobites, available across so many families and forms, the exquisite preservation in three-dimensional relief, expert preparation, affordability, and the explicit exotic expressions of nature all combine to make Russian trilobites a ubiquitous favorite of collectors.
The remains of this ancient Ordovician fauna are abundant in the Baltic region, and the city of Saint Petersburg literally sets on a bed of Ordovician limestone. Many Ordovician outcrops occur south of Saint Petersburg, and far and away the most prolific yield of trilobites comes from the so-called Asery horizon that is some 20 meters thick near the Wolchov River. Some 20 genera and 100 species are found in exquisite, non-compressed preservation. Moreover, the limestone matrix (in a manner similar to that of the Devonian strata in Oklahoma is relatively soft, enabling an expert with modern preparatory equipment to produce finished fossils that can seem life-like. The trilobite exoskeletons generally are extremely well preserved, and are a milk-chocolate color that contrasts well against the lighter limestone. Horizons above and below show the progenitors and descendents of trilobites from the Asery level, adding diversity to the trilobites from the region, and adding to a wonderful story of decent with modification. Some dozen trilobite families are represented, including Asaphidae, Illaenidae, Cheiruridae, Encrinuridae, Raphiophoridea, Lichadidae, Remopleuridae, Harpedidea and Phacopidae.
This specimen measures approximately 3 3/16 inches long on a matrix measuring 7 inches by 6 3/4 inches.
