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
Random Model
Simple multi-layer birch chair
712 View
Lit Candle (3D animated model)
130 View
White Button Mushroom
556 View
potted yucca plant
499 View
United States Army Field Furnace
374 View
1967 Ford Mustang Fast Back Edition
1261 View