Hettangian stage

Target entity: Hettangian stage
Context triple: [Hettange-Grande, givesNameTo, Hettangian stage]

• A. Pliensbachian
  The Pliensbachian is a stage of the Early Jurassic period characterized by distinctive marine faunas and important ammonite biostratigraphy.
• B. Toarcian
  The Toarcian is a stage of the Early Jurassic period characterized by significant marine life diversification and notable oceanic anoxic events.
• C. Siderian Period
  The Siderian Period is the earliest division of the Paleoproterozoic, marked by widespread banded iron formation deposition and the initial rise of atmospheric oxygen on Earth.
• D. Ediacaran Period
  The Ediacaran Period was a late Precambrian geological interval, roughly 635–541 million years ago, marked by the emergence of some of the earliest large, complex multicellular life forms.
• E. Tithonian
  The Tithonian is the final age of the Late Jurassic period, marked by diverse marine life and significant evolutionary developments among dinosaurs and other vertebrates.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Hettangian stage
Target entity description: The Hettangian stage is the earliest age of the Jurassic Period, marking the beginning of the Mesozoic era’s Jurassic system in the geologic time scale.

• A. Pliensbachian
  The Pliensbachian is a stage of the Early Jurassic period characterized by distinctive marine faunas and important ammonite biostratigraphy.
• B. Toarcian
  The Toarcian is a stage of the Early Jurassic period characterized by significant marine life diversification and notable oceanic anoxic events.
• C. Siderian Period
  The Siderian Period is the earliest division of the Paleoproterozoic, marked by widespread banded iron formation deposition and the initial rise of atmospheric oxygen on Earth.
• D. Ediacaran Period
  The Ediacaran Period was a late Precambrian geological interval, roughly 635–541 million years ago, marked by the emergence of some of the earliest large, complex multicellular life forms.
• E. Tithonian
  The Tithonian is the final age of the Late Jurassic period, marked by diverse marine life and significant evolutionary developments among dinosaurs and other vertebrates.
• F. None of above. chosen