Chaetocladus is an extinct non-calcifying genus of unicellular green algae known from the Upper Silurian.

[2] They comprise a parallel-sided, unbranching axis which is surrounded by leaf-like ramifications.

Chaetocladus is known from upper Silurian konservat lagerstätte, and found in association with other algae, arthropods, and annelid worms.

Unlike the majority of Dasycladales, Chaetocladus does not form deposit calcite - therefore it required much rarer taphonomic conditions to be preserved.

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