Palynological studies and lithologic interpretations from logged water bores and petroleum exploration wells in the northeastern Eromanga Basin show that: (a) the mid‐Jurassic to Lower Cretaceous rock sequence including Hutton Sandstone‐Injune Creek Group‐Hooray Sandstone is recognised in the southern and western parts of the area previously mapped as Ronlow Beds; (b) these rock units thin northeastwards, where they merge, each in different places, into an apparently indivisible quartzose sandstone unit for which the name Ronlow Beds is retained; (c) the Cadna‐owie Formation, which overlies the Hooray Sandstone in the subsurface of the southwestern part of the study area, is missing in a broad zone along the present‐day basin margin, where it is thought to have been at least partly eroded: (d) the regional palynological record includes the interval from mid‐Jurassic unit J4 to the Early CretaceousMurospora floridaZone, but is incomplete. Late Jurassic unit J6 is missing, and so are certain Neocomian intervals within theMurospora floridaZone in some areas along the basin margin.