07344 - Beautiful 1.10 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Crotalocephalina Gutierrez-Marco & Martin 2016)
Yard notes & kiln story
Description
Gutierrez-Marco & Martin 2016)
Cephalopoda - Ammonitida - Pseudotissotiidae
it was originally described as a distinct species
• Silurian to Devonian of United States (Oklahoma)
United States ( Mississippi)
07344 - Beautiful 1.10 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Crotalocephalina Gutierrez-Marco & Martin 2016)Chaledonized gastropods (specimen at fat left is 3. 0 cm tall) these snail shells have been replaced by translucent, fibrous, microcrystalline quartz (SiO2).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.