page_title: Asselian
section_title: Synapsids
hierarchical_section_title: Asselian / Asselian life / Synapsids
caption_attribution_description: English: Cutleria wilmarthi - Sphenacodont Pelycosaurian from Late Carboniferous - Early Permian of North America
context_page_description: In the geologic timescale, the Asselian is the earliest geochronologic age or lowermost chronostratigraphic stage of the Permian. It is a subdivision of the Cisuralian epoch or series. The Asselian lasted between 298.9 and 295 million years ago. It was preceded by the Gzhelian and followed by the Sakmarian.
caption: Cutleria
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