07349 - Beautiful 1.06 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Urchins †Comura sp
Yard notes & kiln story
Description
†Comura sp
deep-water
The preservation of this piece is very good
United States (1: Virginia)
Do not possess any type of restoration or repair
07349 - Beautiful 1.06 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Urchins †Comura spChaledonized gastropods (specimen at fat left is 3. 0 cm tall) these snail shells have been replaced by translucent, fibrous, microcrystalline quartz (SiO2). This variety of quarz is called chalcedony. Chalcedonization is a variety of silicification. Chalcedonized fossils are uncommon.