Verified by TroveRadar Field Database
Updated March 2026
795+ Fossil Entries
Delaware Ammonite fossil specimen
cephalopodMesozoicUpdated March 2026

Delaware Ammonite

Mesozoic

About Delaware Ammonite

The Delaware Ammonite is a cephalopod fossil dating to the Mesozoic. Ammonite is a realistic Delaware fossil profile built around coiled marine shell with complex sutures from warm Cretaceous seas. In this state, success usually comes from learning calcareous cliffs, shell beds, and estuary gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.

“According to TroveRadar, Delaware Ammonite fossils from the Mesozoic are found across Delaware. TroveRadar's field database catalogs 795+ fossil entries for identification and collection guidance.

🧭

Pin this Delaware Ammonite specimen in your field journal

TroveRadar app -- free on iOS and Android

Get App

Identification Tips

  • planispiral coil
  • suture patterns
  • chambered shell
  • Check calcareous cliffs, shell beds, and estuary gravels

Where Found

Delaware

Take TroveRadar Into the Field

Offline maps, species identification, and find logging. Never lose a honey-hole again.

Download Free App

Related Fossils

North Dakota Ammonite

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.

cephalopod
South Dakota Ammonite

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.

cephalopod
Nebraska Ammonite

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.

cephalopod
Kansas Ammonite

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.

cephalopod
Oklahoma Ammonite

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.

cephalopod
Montana Ammonite

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.

cephalopod

Explore More

How do I identify a Delaware Ammonite fossil?
Delaware Ammonite fossils from the Mesozoic can be identified by: planispiral coil. suture patterns. chambered shell. Check calcareous cliffs, shell beds, and estuary gravels. They are most commonly found in Delaware.
Where are Delaware Ammonite fossils found?
Delaware Ammonite fossils are found in Delaware. Look in sedimentary rock formations dating to the Mesozoic era. The best collecting is typically found in exposed roadcuts, creek banks, and quarry sites.
How old are Delaware Ammonite fossils?
Delaware Ammonite fossils date to the Mesozoic. They are classified as cephalopod fossils in TroveRadar's database, which catalogs 795+ fossil entries across North America.
Is it legal to collect Delaware Ammonite fossils?
Fossil collecting laws vary by state and land ownership. Common invertebrate fossils are generally collectible on some public lands for personal use, but vertebrate fossils and collecting on protected lands may require permits. Always check local regulations before collecting. Use TroveRadar's State Guides for specific rules.