Acaenolithus dempta

(Forchheimer, 1972) Varol, n. comb. Aug 06, 2020

Set number: 114

  • Acaenolithus dempta 15160 1
  • Acaenolithus dempta 15162 2
  • Acaenolithus dempta 15164 3
  • Acaenolithus dempta 15167 4
  • Acaenolithus dempta 15161 5
  • Acaenolithus dempta 15163 6
  • Acaenolithus dempta 15165 7
  • Acaenolithus dempta 15166 8
    10µm
Acaenolithus dempta, Middle Albian, DSDP Leg 36, Site 327A, The Maurice Ewing Bank, Falkland Plateau
Final Epithet
Acaenolithus dempta (Forchheimer, 1972) Varol, n. comb.
Basionym

Broinsonia dempta Forchheimer, 1972

Synonyms

Acaenolithus galloisii Black, 1973

Remarks

Species of Acaenolithus having a size less than 5.50µm are placed in Acaenolithus dempta. Acaenolithus galloisii is a junior synonym of Acaenolithus dempta based on its size. Both species were initially described as not having any central mesh or lateral bars between the arms of the central cross.

References

Black, M. 1973. British Lower Cretaceous Coccoliths. I-Gault Clay (Part 2). Palaeontographical Society Monograph 127: 49-112.

Forchheimer, S. 1972. Scanning electron microscope studies of Cretaceous coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. Sveriges Geologiska Undersökning, Series C. #668, 65: 1-141.

Taxonomy
Acaenolithus
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Late Cretaceous
          • -
            • Cenomanian
              • Late Cenomanian
        • Early Cretaceous
          • -
            • Barremian
              • Late Barremian
Stratigraphic Range
Late Barremian - Late Cenomanian
Age (Ma)
125.08? - 93.90?
Holotype
Acaenolithus dempta 15160

Broinsonia dempta Forchheimer, 1972

Cenomanian

Tiefbohrung Kopingsberg 1, Sweeden