Placenticeras meeki, ammonite Oviraptor an evolutionary line that seems

an evolutionary line that seems to have disappeared from the fossil record only to reappear much later

and there was a row of spines along the back

but are now known to be Oviraptor eggs

7 meter (30 inches)

Included in each set is a 4x5 inch card with a small time chart and a brief introduction to fossils

Placenticeras meeki, ammonite Oviraptor an evolutionary line that seemsPlacenticeras meeki is an extinct Ammonite distinguished by its smooth convex, broad, nearly unornamented sides and smooth venter (its outside edge). Placenticeras meeki ranged in size up to 80 centimeters in diameter (about 32 inches) as opposed to Placenticeras intercalare which reaches up to 25 centimeters in diameter (about 10 inches). All Placenticeras species have a moderately involute umbilicus (the central whorl or spiral). Involute means