Starting this semester: #MammalogyMonday ! All #mammals fall into three subclasses (categories): Prototheria, Metatheria, and Eutheria. This just means is the mammal egg-laying, has a pouch, or does it birth its offspring the good 'ole fashioned way?
Since this #MM will be mostly pictures of Eutherians, thought I'd kick this off showcasing the other two -therians!
Prototherians, aka #monotremes. This tiny but mighty group are made up of the egg layers. Pictured here are the only two monotremes: duck-billed #platypus and the #echidna. While there is only one platypus, there are four species of echidna!
Metatherians, aka #marsupials. Aussie is home to four species of marsupials but the Americas are also home to some as well! Pictured here is a #kangaroo skull and a skull/specimen of the Virginia #opossum aka the trash cat.