Russian - Asaphus lepidurus

Asaphus Lepidurus Trilobite 53mm

£342.00 GBP

Asaphus lepidurus trilobite measuring 53mm from St. Petersburg, Wolchow River, Russia. dating from the Palaeozoic era, 490 to 470 million years. A fine example of a Russian Asaphus trilobite. The Asaphus lepidurus trilobite in an excellent state of preservation, the prone carapace or exoskeleton is not deformed as is often the case with the ravages of the fossil process. The carapace is fully inflated enabling a good study in a three-dimension view of the attributes of the constituent body parts which make up this isopygous trilobite, the semi-circular glabella with stub eye covers is a similar size to the pygidium which has faint ribbing noticeable on the axial lobe. The eight thoracic diagonally furrowed segments are crisply preserved and clearly definable.

In this genus of trilobite the three longitudinal lobes can be easily distinguished, these three lobes giving the arthropod its name from the Greek word trilobos, tri meaning three and lobos the lobes. The closest extant relative to the trilobite in the group arthropods are the horse crab or king crab, trilobites were thought to have a hard exoskeleton similar to the king crab today, composed of calcite and calcium phosphate minerals in a lattice of chitin this constitutes the dorsal or upper carapace and protected the softer ventral body parts.

The bedrock has sustained a cleave which has run down the left side of the trilobite running through the thoracic segments, fortunately, this has remained at the lower edge or margin of the trilobite. The base of the block which once formed the fossil bed has now been cut flat to aid the presentation of the specimen. A good specimen Asaphus lepidurus trilobite from a classic trilobite lower Ordovician, the fossil Volhovian deposits, Asery level, Volkhov river, the Baltic area, near St Petersburg, Russia.

The Asaphus lepidurus trilobite in an excellent state of preservation, the prone carapace or exoskeleton is not deformed as is often the case with the ravages of the fossil process. The carapace is fully inflated enabling a good study in a three-dimension view of the attributes of the constituent body parts which make up this isopygous trilobite, the semi-circular glabella with stub eye covers is a similar size to the pygidium which has faint ribbing noticeable on the axial lobe.

Genus: Asaphus Lepidurus.
Age: Palaeozoic, Lower Ordovician, Wolchovian Horizon, 490 to 470,000,000 years.
Origin: Asery level deposits, near St. Petersburg region, Wolchow River, Russia.

Asaphus Lepidurus measurement.
Length: 5.3 cm
Width: 3.2 cm
Height: 0.8 cm

Overall measurement.
Height: 9.6 cm
Width: 10.1 cm
Depth: 3.1 cm

Weight: 0.273 g

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Free standard UK delivery - Recorded/Signed-for

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All orders outside the United Kingdom are Tracked/Signed-for for you to follow.

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All products include a certificate of authenticity signed by THE FOSSIL STORE.

All THE FOSSIL STORE products are authentic specimens of high quality.

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If you require a specific delivery date we can accommodate you, simply email us at info@thefossilstore.com or use our Contact Form.

Larger items need more time for delivery with custom packaging requirements to guarantee secure delivery of your item/s.

Once arranged and your order is completed at checkout The Fossil Store will assign your order to DPD Precise or an alternate courier of our choosing.

Please contact us for Next Day Delivery - availability is limited to a multitude of variables including processing times and time of enquiry.

For more information on Returns please see our Returns Policy. Some Exclusions Apply. Learn more about Thefossilstore.com delivery options and Returns Policy.

Please note, for UK orders - small products usually arrive within 3 - 5 business days.
Large products usually arrive within 4 - 10 business days.

For deliveries outside of the UK, please see our Delivery and Returns.

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