Creodonta

…They are thought to have branched off from the Paleocene Miacoidea. The Paleocene Creodontidae, once considered a suborder of Carnivora, has been found to be separate from Carnivora and has been considered an independent order in recent years. The Pinnipedia, a suborder of pinnipeds consisting of about 34 species from the families Otariidae, Otariidae, and Phocidae, is often considered a separate order because its morphology and lifestyle differ significantly from those of the Schizopoda, but it is closely related to the Ursidae and Mustelidae of the superfamily Ursoidea, and some experts even include it in this superfamily. …

*Some of the terminology that mentions "Creodonta" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これらは暁新世のミアキス上科Miacoideaから分かれ出たと考えられている。かつて食肉類の1亜目とされていた暁新世の肉歯類Creodontaは，食肉目とは別系統のものと判明し，近年では独立の目とされる。　アシカ科，セイウチ科，アザラシ科の約34種からなる鰭脚亜目Pinnipediaは，形態や生活様式が裂脚亜目のものと顕著に異なるため，しばしば独立の目とされるが，クマ上科のクマ科やイタチ科に近縁で，この上科に含める専門家さえある。…

※「Creodonta」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報