Low Latitude Radiolarian Zonation
60.2 - 0 Ma
Geologic Time
Phanerozoic
Cenozoic
Quaternary
Holocene
Pleistocene
Late Pleistocene
Middle Pleistocene
Calabrian
Gelasian
Neogene
Pliocene
Piacenzian
Zanclean
Miocene
Messinian
Tortonian
Serravallian
Langhian
Burdigalian
Aquitanian
Paleogene
Oligocene
Chattian
Rupelian
Eocene
Priabonian
Lutetian
Ypresian
Paleocene
Thanetian
Selandian
Zone
Buccinosphaera invaginata
Collosphaera tuberosa
Stylatractus universus
Amphirhopalum ypsilon
Anthocyrtidium angulare
Pterocanium prismetium
Lychnodictyum audax
Phormostichoartus doliolum
Stichocorys peregrina
Didymocyrtis penultima
Didymocyrtis antepenultima
Diartus petterssoni
Dorcadospyris alata
Calocycletta costata
Stichocorys wolffi
Stichocorys delmontensis
Cyrtocapsella tetrapera
Lychnocanoma elongata
Dorcadospyris ateuchus
Theocyrtis tuberosa
Cryptocarpium ornatum
Calocyclas bandyca
Cryptocarpium azyx
Podocyrtis goetheana
Podocyrtis chalara
Podocyrtis mitra
Podocyrtis ampla
Thyrsocyrtis triacantha
Dictyoprora mongolfieri
Theocotyle cryptocephala
Phormocyrtis striata striata
Buryella clinata
Bekoma bidartensis
Bekoma campechensis
