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Globigerina helicina d'Orbigny, 1826       

Class: Rotaliata  Subclass: Globigerinana  Order: Globigerinida  Family: Globigerinidae

found in a core of DSDP Leg 47   off Biscaya and Iberia   Portugal   Site 398

Geological Time: Neogene  Pliocene  Piacenzian


the images are published under public domain in the below cited scientific report of the IODP, ODP and DSDP


size about 450 and 510µm

The identification is based upon:
Iaccarino, S.; Salvatorini, G., 1979: Planktonic foraminiferal biostratigraphy of the Neogene and Quaternary sediments from Site 398, DSDP, Leg 47B. in Ryan, W.B.F., Sibuet, J.-C., et al., Init. Repts. DSDP, 47 Part 2 of the cruises of the drilling vessel Glomar Challenger, Vigo, Spain to Brest, France; April-May 1976. Plate 8, Fig. 10,11

           

dataset number: FEU-1008832
           

Citation:
Iaccarino, S.; Salvatorini, G., 1979: Planktonic foraminiferal biostratigraphy of the Neogene and Quaternary sediments from Site 398, DSDP, Leg 47B. in Ryan, W.B.F., Sibuet, J.-C., et al., Init. Repts. DSDP, 47 Part 2 of the cruises of the drilling vessel Glomar Challenger, Vigo, Spain to Brest, France; April-May 1976. Plate 8, Fig. 10,11