...Mammalia - Theria - Eutheria - Ungulata - Tubulidentata, Mesonychids, Notoungulata and Litopterna

Baby Aardvark and Mom at Brookfield Zoo

Mammals by DK - Smithosonian Handbooks
The Simon & Schuster Encyclopedia of Dinosaurs & Prehistoric Creatures

Vocabulary Added:
mesonychids: middle-claw
tubulidentata: tube-tooth
notoungulata: southern-hoof-toed
litopterna: simple-ankles

Activity:
Draw and label an animal from each family
Add sinonyx, aardvark, toxodon, and macrauchenia to the Animal Tree