Prolagus imperialis

Prolagus imperialis was an extinct species in the genus "Prolagus". It was one of the species in this genus that were recently discovered. Prolagus imperialis may have resembled a pika.
Nomenclature.
"Prolagus imperialis" was named after Poggio Imperiale, the place where its fossils were discovered. Its name might mean "first rabbit of Poggio Imperiale".
Size.
"Prolagus imperialis" is larger than the species which was discovered along with it, "Prolagus apricenicus". Also, "Prolagus imperialis" is the largest of all Prolagidae, weighing about 5 kilograms.