ammonite fossil
Kikushi, a collective term for cephalopods and ammonites in the phylum Mollusca, is a group of extinct marine organisms. Kikushi lived from the early Devonian to the late Cretaceous period, and its shell is often preserved in the form of fossils in the strata. The outer shell of ammonite is a single petal, consisting of three parts: the fetal shell, the gas shell, and the living room. It usually spirals around the fetal shell along a plane, with each revolution forming a spiral ring. Adult ammonite shells generally have 5 to 9 spiral rings, symmetrical on both sides, and can be straight, curved, or even irregular.
Popular Models
Shrine
115 View
King Kong Hercules Wood Carving
166 View
The bell tower of a Japanese temple
189 View
Random Model
Wombat Bear
389 View
Tripod work light
360 View
Women's World Cup Winners' Trophy
426 View
MCI Flanders Large Passenger Car
195 View
Nike Air Max 90 Olive Green sneaker
238 View
