Pleurosternon is an extinct genus of freshwater pleurosternid turtle from the latest Jurassic to earliest Cretaceous of Europe.

[4] In 2021 a second valid species, Pleurosternon moncayensis, was named from the Ágreda locality of Tarazona y el Moncayo, Aragon, Spain, which spans the Tithonian-Berriasian transition.

[5] Pleurosternon has a very depressed carapace, much flatter than similar genera, such as the North American Late Jurassic and Early Cretaceous Glyptops.

[7] P. bullockii is also known from disarticulated shell elements found in Tithonian aged deposits near Wimille in Pas-de-Calais in northern France.

[12] The Portland stone, however is a maritime deposit of slightly older age than the Purbeck, most bones found there are interpreted as having washed out to sea.