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Fossil Shack

World's Oldest Bat Fossil // 52 Million Years Old

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Product Description

Icaronycteris Index is one of the oldest bat species on the planet. It lived some 52 million years ago during the Eocene era, and were largely found in what is now Wyoming. Icaronycteris was a primitive bat, emerging very early in the age of mammals. Modern bats have a single claw on their first digit, but Icaronycteris also had another one on the second digit.

It has a long tail, a carryover in its evolution from a land dwelling mammal and a less rigid skeletal structure than modern day bats. Even though Icaronycteris was an insectivore, it also had a full set of teeth that were relatively unspecialized beyond the basic mammalian form. Later, bats would develop more specialized teeth that were also fewer in number than Icaronycteris had.

This bat was found in older stone that any other bat on record and is possibly the oldest fossil bat ever discovered. This bat also has soft tissue preservation, so you can see the muscles of the right wing, and tendons around the sacrum and cartilage in the ribcage. Bats are one of the most rare fossils to come out of the Green River Formation. You may never see another one come up for sale in your lifetime.

Product Details
  • Measurements
    11.5"L x 10"W x .8"H
  • OriginUnited States

— Real Fossil
— Approx. 52 Million Years Old
— Certificate Of Authenticity Included

Shipping Information
  • Shipping Availability
    Contiguous United States
  • Shipping Policy
    White Glove Delivery
  • White Glove Charges
    $599.00 first item / $599.00 each additional ?
    White glove service includes delivery into the room of choice with removal of packaging. White glove service does NOT include assembly IF the item requires it.
  • Ship In
    2-3 weeks
  • Return Policy
    Final sale, not eligible for return or cancellation

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