Michigan Orthocone Nautiloid
Ordovician-Silurian
About Michigan Orthocone Nautiloid
The Michigan Orthocone Nautiloid is a cephalopod fossil dating to the Ordovician-Silurian. Orthocone Nautiloid is a realistic Michigan fossil profile built around straight shelled cephalopod preserved in limestone and dolostone. In this state, success usually comes from learning glacial till, Devonian limestones, and Lake Superior gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
“According to TroveRadar, Michigan Orthocone Nautiloid fossils from the Ordovician-Silurian are found across Michigan. TroveRadar's field database catalogs 795+ fossil entries for identification and collection guidance.”
Pin this Michigan Orthocone Nautiloid specimen in your field journal
TroveRadar app -- free on iOS and Android
Identification Tips
- ●long cone shape
- ●chamber partitions
- ●central siphuncle
- ●Check glacial till, Devonian limestones, and Lake Superior gravels
Where Found
Take TroveRadar Into the Field
Offline maps, species identification, and find logging. Never lose a honey-hole again.
Related Fossils
North Dakota Ammonite
Mesozoic
Ammonite is a realistic North Dakota fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning chalk beds, badlands mudstones, and river gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
South Dakota Ammonite
Mesozoic
Ammonite is a realistic South Dakota fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning chalk beds, badlands mudstones, and river gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
Nebraska Ammonite
Mesozoic
Ammonite is a realistic Nebraska fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning chalk beds, badlands mudstones, and river gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
Kansas Ammonite
Mesozoic
Ammonite is a realistic Kansas fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning chalk beds, badlands mudstones, and river gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
Oklahoma Ammonite
Mesozoic
Ammonite is a realistic Oklahoma fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning chalk beds, badlands mudstones, and river gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
Montana Ammonite
Mesozoic
Ammonite is a realistic Montana fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning dinosaur-bearing mudstones, glacial gravels, and marine shales, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.