Biostratigraphy and sequence stratigraphy of the Toarcian Ludwigskanal section (Franconian Alb, Southern Germany)

1. Pleuroceras solare (Phillips), reworked concretion in bed 4, basis of Hawskerense Subzone, Amaltheenton Formation. GZG.INV.70496: d = 53 mm, di = 39 mm, u = 22 mm, wh = 17 mm, wb = 15 mm, rb/2 = 15. 2. Two specimens of Pleuroceras solare var. solitarium (Simpson), together with a juvenile Amauroceras ferrugineum (Simpson), reworked concretion in bed 4, basis of Hawskerense Subzone, Amaltheenton Formation. GZG.INV.70497a: d = 54 mm, di = 39 mm, u = 21 mm, wh = 17 mm, wb = 15 mm, rb/2 = 15; GZG.INV.70497b: d = 56 mm, di = 40 mm, u = 24 mm, wh = 18 mm, wb = 14 mm, rb/2 = 15; GZG.INV.70497c: d = 11 mm, di = 7 mm, u = 3 mm, wh = 5 mm, wb = 3 mm, rb/2 = 28. 3. Pleuroceras spinatum (Bruguière), 2 m below top of bed 5, Hawskerense Subzone, Amaltheenton Formation. GZG.INV.70498: d = 54 mm, di = 37 mm, u = 23 mm, wh = 19 mm, wb = 18 mm, rb/2 = 11. 4. Pleuroceras spinatum (Bruguière), 50 cm above basis of bed 5, Hawskerense Subzone, Amaltheenton Formation. GZG.INV.70499: d = 76 mm, di = 58 mm, u = 36 mm, wh = 24 mm, wb = 24 mm, rb/2 = 14. 5. Tiltoniceras antiquum (Wright), 1–2 cm above basis of bed 7, Semicelatum Subzone, Posidonienschiefer Formation. Minor part (bright area) of the body chamber restored. GZG.INV.45641a: d = 48 mm, di = 33 mm, u = 12 mm, wh = 20 mm, wb = 12 mm, rb/2 = 22. 6. Tiltoniceras antiquum (Wright), 1–2 cm above basis of bed 7, Semicelatum Subzone, Posidonienschiefer Formation. GZG.INV.45641b: d = 38 mm, di = 26 mm, u = 9 mm, wh = 17 mm, wb = 9 mm, rb/2 = (33); GZG.INV.45641c: d = 27 mm, di = 18 mm, u = 6.5 mm, wh = 11 mm, wb = 7 mm, rb/2 = (30). 7. Lytoceras ceratophagum (Quenstedt), middle part of bed 7, Exaratum Subzone, Posidonienschiefer Formation. GZG.INV.70500: d = 29 mm, di = 18 mm, u = 9 mm, wh = 12 mm, wb = 11 mm, rb/2 = 46. 8. Hildaites murleyi (Moxon), bed 7, Exaratum Subzone, Posidonienschiefer Formation. GZG.INV.70501: d = 41 mm, di = 27 mm, u = 14 mm, wh = 16 mm, wb = 12 mm, rb/2 = 21; (leg. Arno Garbe). 9. Hildaites murleyi (Moxon), together with juvenile Cleviceras exaratum (Young and Bird), bed 7, Exaratum Subzone, Posidonienschiefer Formation. GZG.INV.70502: d = 44 mm, di = 32 mm, u = 17 mm, wh = 15.5 mm, wb = 10 mm, rb/2 = 24; (leg. Arno Garbe). 10. Cleviceras exaratum (Young and Bird), middle part of bed 7, Exaratum Subzone, Posidonienschiefer Formation.GZG.INV.70503: d = 39 mm, di = 27 mm, u = 10 mm, wh = 17 mm, wb = 8 mm, rb/2 = 24.