User:Abyssal/Prehistory of Antarctica/DYK/2

• ... that multiple Leptocleidus skeletons have been found preserved as gemstone quality opal over the course of the history of plesiosaur research?

• ... that modern humans have been found to inhabit various countries for periods ranging from almost 200,000 years to less than 800 years?

• ...that eighty years on, scientists are still debating whether the Palæozoic fossils known as Chitinozoans (SEM image pictured) represent plants, animals or eggs?

• ... that what is now the southwestern United States was at one time connected to East Antarctica according to the SWEAT model?

• ... that lice from mummified guinea pigs and mites preserved in amber while feeding on spiders have provided evidence for researchers in the field of paleoparasitology?