22401 - Well Preserved Pyritized 1.17 Inch Pleuroceras Lower Jurassic Ammonite Dinosaurs Ivanopleura
Yard notes & kiln story
Description
Ivanopleura
Age range: 501
PMG-an [explanation]
and CR chondrites Comments: Approved 29 Jan 2015 Writeup Writeup from MB 104:
The details of the anatomy of the superficial osseous structure of the root are extremely well preserved
22401 - Well Preserved Pyritized 1.17 Inch Pleuroceras Lower Jurassic Ammonite Dinosaurs IvanopleuraUnidentified species. His suture lines are wonderfully well detailed. It is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.