30794 - Well Preserved 0.69 Inch Onnia sp Ordovician Trilobite scales Ptychagnostus aksayensis
Yard notes & kiln story
Description
Ptychagnostus aksayensis
• Niagaran of United States (1: Indiana)
Orthoceras siculum
Age range: 428
Alokistocare septum
30794 - Well Preserved 0.69 Inch Onnia sp Ordovician Trilobite scales Ptychagnostus aksayensisOnnia sp, Bancroft 1933 (trilobite) Trilobita Asaphida Trinucleidae Parent taxon: Trinucleidae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Ecology: fast moving low level epifaunal suspension feeder Age range: 460. 9 to 443. 7 Ma