Seatown and Greens

The Green Ammonite Beds of Seatown are a geological formation located on the Jurassic Coast in Dorset, England. The formation is known for its rich ammonite fossil record, particularly those of the genus Coroniceras.

Coroniceras is a genus of medium-sized ammonites that are characterized by their distinctive ribbing and coiled shape. They are often found in the Green Ammonite Beds of Seatown, along with other ammonite species such as Phylloceras, Dactylioceras, and Hildoceras.

The Green Ammonite Beds of Seatown are part of the Lower Jurassic Lias Group, which was deposited in a shallow sea that covered much of southern England during the early Jurassic period, approximately 190 to 200 million years ago. The ammonite fossils found in this formation provide important insights into the evolution and diversity of these marine animals during this time period.

One of the most notable features of the Green Ammonite Beds of Seatown is the green coloration of the sedimentary rocks. This green coloration is due to the presence of glauconite, a type of mineral that forms in marine sediments under certain environmental conditions. The presence of glauconite in the Green Ammonite Beds of Seatown suggests that the sediment was deposited in a low-oxygen environment with slow rates of sedimentation.

The Green Ammonite Beds of Seatown are a popular destination for fossil hunters and enthusiasts, who can search for ammonite fossils along the rocky coastline. The fossils found in this formation are an important part of the geological and paleontological history of the Jurassic Coast, and they provide valuable insights into the evolution and diversity of ammonites during the early Jurassic period.