radiolaria - rads_cenozoic - Botryometra radiolaria - rads_cenozoic - Botryometra


Classification: rads_cenozoic -> Cannobotryidae -> Botryocyrtidae -> Botryometra
Sister taxa: Acrobotrissa, Amphimelissa, Botryocampe, Botryocella, Botryocyrtis, Botryometra, Centrobotrys, Lithobotrys, Neobotrys
Daughter taxa (time control age-window is: 0-800Ma)
Botryometra poljanskii

neptune records: 4
Botryometra spongiosa

neptune records:
Botryometra sp.

neptune records:


Citation: Botryometra Petrushevskaya 1975
taxonomic rank: genus
Basionym: Botryometra

Catalog entries: Botryometra

Original description: Two-segmented ellipsoidal skeleton, the second segment (thorax) larger than the cephalis if the shell is complete. Thorax may be incomplete or reduced. In these cases cephalis and thorax are equal. Pores are few and irregular. Cephalis with branches a in the upper part (Figure 10, VIII). Cephalis is more or less separated from the thorax. The spine A goes in the cephalis as the columella. There is no distinct subdivision into cephalic lobes. Eucephalic and antecephalic parts of the equal height. The spines A, D, L may go outside as horns and lateral feet.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Neogene Period (100% up, 2.6Ma, in Piacenzian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:


Petrushevskaya, M. G. (1975a). Cenozoic radiolarians of the Antarctic, Leg 29, DSDP. Initial Reports of the Deep Sea Drilling Project. 29: 541-675. gs O


Botryometra compiled by the radiolaria@mikrotax project team viewed: 23-5-2024

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