Acaenolithus dempta
Set number: 114
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
10µm
Set number: 115
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
10µm
Broinsonia dempta Forchheimer, 1972
Acaenolithus galloisii Black, 1973
Species of Acaenolithus having a size less than 5.50µm is placed to Acaenolithus dempta. Acaenolithus galloisii is considered to be a junior synonym of Acaenolithus dempta based on its size. Both species were originally described by not having any central mesh or lateral bars between the arms of the central cross.
Black, M., (1973): British Lower Cretaceous Coccoliths. I-Gault Clay (Part 2). PalaeontographicalSociety Monograph, 127: 49-112.
Forchheimer, S., (1972): Scanning electron microscope studies of Cretaceous coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. SverigesGeologiskaUndersökning; Series C, #668, 65: 1-141.
Holotype
Broinsonia dempta Forchheimer, 1972
Cenomanian
Tiefbohrung Kopingsberg 1, Sweeden