Macrospondylus is an extinct genus of machimosaurid teleosauroid crocodyliform from the Early Jurassic (Toarcian) of Europe.

Fossils are known from the Posidonia Shale of Germany, the Whitby Mudstone of the United Kingdom, and the "schistes bitumineux" of Luxembourg.

[3][4][5] In 2016, its length was estimated at 5.5 m (18 ft), making it the largest known Early Jurassic crocodylomorph.

[7] M. bollensis exhibited a regular, stable growth rate until reaching adulthood.

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