Pegasi & Unicorns - Uniscornidae
The Unicorn - Unicornis uniscornis
Close relatives: The unicorn's closest relatives include the monoceros, coreen, antelope, and the domestic goat.
The Monoceros - Unicornis monocornis
Close relatives: The monocerus's close relatives are the unicorn & the antelope.
The pegasus - Equus pegasii
Close relatives: The horse. DUH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The coreen - Unicornis virga
Close relatives: The unicorn and the antelope.
The duocerus - Equus duocorneus
Close relatives: The closest relatives of the duocerus are the antelope, unicorn, and pegasus.
The tulpar - Unicornis turkis
You may think that the tulpar is identical to the pegasus, but the tulpar is in fact a winged variant of the unicorn rather than the horse.
The abada - Uniscornis minimus
The shadhavar - Uniscornis cariosus
The yale - Unicornis duos
The voro - Equus xanthus