The formation straddles the Triassic-Jurassic boundary and has provided evidence of widespread mire-forest deterioration that began in the latest Rhaetian.
[5] This member represent the basal part of the Formation, that represents a transition between the terrestrial Kågeröd Formation and the delta dominated coal layers of the Bjuv Member, being made by poorly stratified clay & claystone, mostly green in coloration.
[6] The layer is dominated by coarse arenaceous sediments, specially between Billesholm and Höganäs, parallel to the Söderåsen and Kullaberg horsts.
[8] Towards the southern part of this area the deposition changes, with an increased abundance of argillaceous contents, specially at places like Skromberga.
[7] This beds are overlain by some metres of arenaceous clays, iron claystone and calcareous sandstone with few intercalation of a coal seam (known as Tågaborg coal seam), where floral remains are also recovered such as Dictyophyllum nilssoni and Equisetites spp..[7] Then the layers turn into 5 m of argillaceous sandstone and 5 m slightly arenaceous clays, with a last 1 m of calcareous sandstone, on a sequence known from cliff series at Laröd-Sofiero at the north of Helsingborg, with plant remains such as Nilssonia polymorpha and Dictyophyllum nilssoni, referred to the Pinuspallenites-Trachysporites zone.
The upper part of the Helsingborg Member starts with a 28 m thick sandstone, with a section known as Fleninge beds, that represent layers where marine ingressions were more common, with the last layers of the formation made up of sandstone, claystone and several minor coal seams.
They show the outer wall (hapsine) construction specific to clitellate annelids and lack an alytine (inner) layer.
The most common Bivalve found locally, indicator of increased salinity levels on the Hettangian layers.
Angelinella[17] A. angelini Bjuv member Elytrons A beetle, incertae sedis Archostemata inside Coleoptera.
Heeriaopsis[17] H. laevigatum Bjuv member Elytrons A beetle, incertae sedis Archostemata inside Coleoptera.
Nannocurculionites[17] N. carlsoni Bjuv member Elytrons A beetle, incertae sedis Archostemata inside Coleoptera.
Originally identified as Spirangium, considered gigantic Chara, fresh-water green algae (stone-worths).
[19] Scanilepis[22][23] S. dubia A freshwater bony fish, member of the family Scanilepididae inside Paleonisciformes.
[27] Eubrontes[25][28] Footprints Theropod tracks, type member of the ichnofamily Eubrontidae, incertae sedis inside Theropoda.
Kayentapus[25][29][11] Footprints Theropod tracks, member of the ichnofamily Eubrontidae, incertae sedis inside Neotheropoda.