The first was an apparent clutch of eggs preserved in the sediment that filled in the living chamber of a Jurassic harboceratid ammonite discovered in a concretion that dated back to the toarcian in glacial drift that came from the Baltic region.
The first was an apparent clutch of eggs preserved in the sediment that filled in the living chamber of a harboceratid dating back to the Toarcian age of the Jurassic period. This specimen was discovered in a concretion incorporated into glacial drift that came from the Baltic region.