The word "megafaunal" refers to giant or huge animals that once lived on Earth. It describes creatures that were much larger than regular animals, like mammoths or saber-toothed tigers.
While understanding causes and effects of megafaunal extinctions will require a deeper knowledge of climate change and prehistoric human land use chronologies, everyone agrees that they had major impacts on plant communities. (scientificamerican.com)
MacPhee also studies recent mammalian extinctions, concentrating on the loss of megafaunal species during the end - Pleistocene in North America and northern Asia. (amnh.org)
In the early postglacial period, there are records of several megafaunal species extending their range into southern and central alberta from the south. (fsat.ru)