07345 - Beautiful 1.02 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Neltneria No fractures or restoration
Yard notes & kiln story
Description
No fractures or restoration
prefrontal contributes moderately to margin of naris and possesses small anterior supraorbital ridge
Woodward 1901 and Woodward 1902
BAADI BOUYA and MBAREK AMAGHZAZ
Trilobita - Phacopida - Dalmanitidae
07345 - Beautiful 1.02 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Neltneria No fractures or restorationChaledonized gastropods (specimen at fat left is 3. 0 cm tall) these snail shells have been replaced by translucent, fibrous, microcrystalline quartz (SiO2).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.