= Jurassic
{c}
The <Jurassic> is the <Mesozoic> period between the <Triassic> and <Cretaceous>, approximately $201.4$ to $143.1$ million years ago.<International Chronostratigraphic Chart by International Commission on Stratigraphy (2026-06)>[Jurassic row]{ref} Its position in a <rock> sequence can be established by correlated stratigraphic evidence even where no directly datable volcanic layer occurs. Numerical calibration and recognition of the interval in local strata are therefore distinct tasks.
Back to article page
