Boreal Sea Mesozoic-era seaway that lay along the northern border of Laurasia Not to be confused with North Sea (disambiguation). The Boreal Sea was a Mesozoic-era seaway that lay along the northern border of Laurasia.[1] References ^ World distribution of middle Jurassic ammonites (Upper Aalenian to Middle Bathonian): relationships between biodiversity and palaeogeography - Moyne et al. 175 (5): 513 - Bull...
