Dactylioceras
Sign in to saveDactylioceras was a widespread genus of ammonites from the Lower Jurassic period, approximately 180 million years ago (mya).Like many other ammonites, the genus Dactylioceras is extremely important in biostratigraphy, being a key index fossil for identifying their region of the Jurassic. It had a nearly cosmopolitan distribution during the time it existed.
Article
7 sectionsContents
- Etymology
- Description
- Ecology
- Distribution
- Subgenera
- Species
- References
Dactylioceras was a widespread genus of ammonites from the Lower Jurassic period, approximately 180 million years ago (mya).Like many other ammonites, the genus Dactylioceras is extremely important in biostratigraphy, being a key index fossil for identifying their region of the Jurassic. It had a nearly cosmopolitan distribution during the time it existed.
==Etymology== The name Dactylioceras comes from the Greek dactyl, meaning “finger”, and keras, meaning "horn" and refers to the shell's branching ribs.