07350 - Beautiful 1.06 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Pterosaur very likely of the Dromaeosauridae

very likely of the Dromaeosauridae family

Its morphology is never slightly flat like that of the main species of Pterosaur

Impressive rare pathologically deformed Eremiasaurus rooted tooth in its natural matrix

Marckgrafia

Platecarpus ptychodon

07350 - Beautiful 1.06 Inch Chalcedonized Fossil Gastropod Cretaceous Dakhla Pterosaur very likely of the DromaeosauridaeChaledonized gastropods (specimen at fat left is 3. 0 cm tall) these snail shells have been replaced by translucent, fibrous, microcrystalline quartz (SiO2).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.