Scrotifera
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Scrotifera is a clade of placental mammals that groups together grandorder Ferungulata, Chiroptera, other extinct members and their common ancestors. The clade Scrotifera is a sister group to the orde
The common ancestor of Scrotifera might have been similar to Phenacodus, an early ungulate, in terms of body dimensions and life history (precociality in particular).
Pegasoferae
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Pegasoferae is a proposed clade of mammals based on genomic research in molecular systematics by Nishihara, Hasegawa and Okada.
