Aliphatic and aromatic biomarkers from Gondwanan sediments of Late Ordovician to Early Devonian age: An early terrestrialization approach

► Aliphatic and aromatic biomarkers in Ordovician to Devonian sediments correlated with terrestrial and marine palynomorph content. ► Several land plant biomarkers (e.g. retene) found in middle Silurian-lower Devonian samples. ► Bryophytes and tracheophytes proposed as a new terrestrial source for most biomarkers detected.