Set number: 1089

  • Productellus 1
Obturolithus productellus

Set number: 1077

  • Obturolithus scissurus 943 15 1
  • Obturolithus productellus 1152 22 2
Obturolithus productellus, Middle Miocene, Malta

1. Coccosphere: 6.6µm, Coccolith 3.8µm

2. Coccosphere: 4.8µm, Coccolith 2.7µm;

Final Epithet
Obturolithus productellus (Bukry, 1975b) Varol, n. comb.

Crenalithus productellus Bukry, 1975b


Ellipsoplacolithus productus Kamptner 1963, Invalid ICN Art. 35.1

Dictyococcites productus (Kamptner 1963) Backman, 1980, Invalid ICN Art. 35.1

Reticulofenestra producta (Kamptner 1963) Varol, 1989a, Invalid ICN Art. 35.1

Dimensions Of Holotype

Length: 3.2µm


Small size (<4.0µm) species of Obturolithus.


Coccolithus taganus Fonseca, 1976 erroneously placed into synonymy of this species. Coccolithus taganus is considered here to be a reworked small Prinsius martini due to the presence of two tube cycles.


Backman, J., 1980. Miocene-Pliocene nannofossils and sedimentation rates in the Hatton-Rockall Basin, NE Atlantic Ocean. Stockholm Contributions in Geology 36, 1-91.

Bukry, D., 1975b. Coccolith and silicoflagellate stratigraphy, northwestern Pacific Ocean, Deep Sea Drilling Project Leg 32. Initial Reports of the Deep Sea Drilling Project 32, 677-701.

Fonseca, B., 1976. Coccolithus taganus, nouvelle espece de Coccolithopohride du Miocene de Lisbonne. Boletim de Sociedade Geologica de Portugal 20, 29-32.

Kamptner, E., 1963. Coccolithineen-Skelettreste aus Tiefseeablagerungen des Pazifischen Ozeans. Annalen des Naturhistorischen Museums in Wien 66, 139-204.

Varol, O., 1989a. Calcareous nannofossil study of the central and western Solomon Islands. Vedder, J.G., Bruns, T.R., (eds.), Geology and offshore resources of Pacific island arc-Solomon Island and Bougainville, Papua New Guinea Regions: Houston, Texas, Circum-Pacific Council for Energy and Mineral Resources Earth Sciences Series vol. 12, pp. 239-268.