Fossil ammonite, Rasenia askepta, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia lepidula, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia lepidula, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia lepidula, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia askepta, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia lepidula, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia lepidula, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia askepta, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Rasenia cf. moschi, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Xenostephanus aff. anceps, from the Upper Jurassic of Eathie Haven, Ross and Cromarty, Scotland, part of the Hugh Miller Collection

Fossil ammonite, Harpoceras falcifer, calcite shell in limestone matrix, from the Upper Lias of the Jurassic Period of Rothersthorpe, Nottinghamshire, England

Fossil ammonites, Ammonoidea indet., large group, possibly from the Jurassic Period

Fossil ammonite, Ammonoidea indet., from the Triassic Period of Halstatt, Austria

Fossil ammonite, Ammonoidea indet.

Fossil ammonite, Ammonoidea indet., from the Jurassic Period of Whitby, Yorkshire, England

Fossil ammonite, Ammonoidea indet., from Scotland, part of the Hugh Miller Collection