Ancholme Group

Geology

Formations: Kimmeridge Clay (11), Oxford Clay (60)

Lithologies: not reported (21), claystone (34), mudstone (9), "shale" (5), sandstone (2), marl (1), "limestone" (1)

Paleoenvironments: marine indet. (44), shallow subtidal indet. (2), open shallow subtidal (1), deep subtidal shelf (1), offshore indet. (12), marginal marine indet. (8), offshore (3)

Age range: base of the Early/Lower Callovian to the top of the Early/Lower Tithonian or 165.30000 to 145.06000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Callovian165.3 - 161.5United Kingdom (England) (37950 38487 100519 140699 141874 148892 149242 149243 182912 186252 199916)
Early/Lower Callovian165.3 - 161.5United Kingdom (England) (36578 118199)
Late/Upper Callovian165.3 - 161.5United Kingdom (England) (38488 38489 38490 52552 77060 77129 92052 119503)
Late/Upper Callovian165.3 - 161.5United Kingdom (59044)
Late/Upper Callovian165.3 - 161.5France (Nord-Pas-de-Calais) (119668)
Middle Callovian165.3 - 161.5United Kingdom (England) (47362 47625 52635 53680 53833 59128 92050 92051 92053 105081 109800 133067 133068 142299 149244 149245 149246 149253 149254 162945)
Callovian - Oxfordian165.3 - 154.8United Kingdom (England) (98447 140700 140706 140707 141826)
Late/Upper Callovian - Early/Lower Oxfordian165.3 - 154.8United Kingdom (England) (77130)
Early/Lower Oxfordian161.5 - 154.8United Kingdom (England) (52556 93210 191840 191841 191842 191843 191844)
Early/Lower Oxfordian161.5 - 154.8United Kingdom (Cambridgeshire) (93211 93213)
Oxfordian161.5 - 154.8United Kingdom (England) (92048 100669)
Early/Lower Kimmeridgian154.8 - 152.21United Kingdom (England) (114894 119665 145134)
Kimmeridgian - Early/Lower Tithonian154.8 - 145.06United Kingdom (Oxfordshire) (114895)
Kimmeridgian - Early/Lower Tithonian154.8 - 145.06United Kingdom (England) (92096)
Late/Upper Kimmeridgian152.21 - 149.2United Kingdom (England) (100263)
Late/Upper Kimmeridgian - Early/Lower Tithonian152.21 - 145.06United Kingdom (England) (139859)
Early/Lower Tithonian149.2 - 145.06United Kingdom (Oxfordshire) (217278)
Early/Lower Tithonian149.2 - 145.06United Kingdom (England) (98477 150922)
Tithonian149.2 - 143.1United Kingdom (England) (98478)