中真鳄类（Mesoeucrocodylia）是个演化支。用来取代并系群的中鳄亚目。中真鳄类出现于侏㑩纪早期，并存活到现代。

长久以来，中鳄亚目被认为是个位于原始原鳄类到现存真鳄类的演化等级，Benton与Clark在1988年提出一个种系发生学研究，证实真鳄亚目（包括所有现存鳄鱼物种），是包含在中鳄亚目之下的。因为古生物学家并不接受并系群，所以他们创建中真鳄类演化支来取代中鳄亚目。中真鳄类相当于鳄形动物（Crocodyliformes）除去原始的原鳄类。

目前有数个特征可用来鉴定中真鳄类，例如：额骨互相愈合成一块、具有初步的次生颚，由腭骨的后缘延伸形成、耳孔的后缘接触者鳞状骨。

Mesoeucrocodylia is the clade that includes Eusuchia and the paraphyletic group Mesosuchia. The group appeared during the Early Jurassic, and continues to the present day.

It was long known that Mesosuchia was an evolutionary grade, a hypothesis confirmed by the phylogenetic analysis of Benton and Clark, 1988 which demonstrated that Eusuchia (which includes all living crocodylian species) was nested within Mesosuchia. As the authors did not accept paraphyletic groups, Mesoeucrocodylia was erected to replace Mesosuchia.