Discoaster deflandrei
Set number: 692
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10µm
Set number: 691
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1
-
2
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3
-
4
-
5
10µm
Set number: 690
-
1
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2
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3
-
4
10µm
Discoaster deflandrei Bramlette & Riedel, 1954
Emended description: Hexagonal symmetrical discoaster has a wide, flat central area without ornamentation. The short and robust arms terminate in bifurcations. The inter-arm area is rounded.
Discoaster deflandrei differs from Discoaster emblematicus by lacking sutural ridges on the distal side. The bifurcation in Discoaster deflandrei is rounded, whereas it is wrench-like in Discoaster emblematicus. Discoaster deflandrei is distinguished from Discoaster hughesii by lacking proximal bulging with ridges and sutural ridges on the distal side.
Bramlette, M. N. & Riedel, W. R. 1954. Stratigraphic value of discoasters and some other microfossils related to Recent coccolithophores. Journal of Paleontology. 28: 385-403.
Holotype
Discoaster deflandrei
Bramlette & Riedel, 1954
Early Oligocene
Cipero Section, Trinidad