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Volume 57, 1927
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(b) Stratigraphical Tables.

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Table 1.—Approximate Range of Genera and Subgenera.
Note.—The stages of this table are not claimed to be accurate or complete. They are intended only as a rough guide. The Mokau beds have been provisionally included in the Awamoan, and the Clifden beds in the Hutchinsonian. The Tongoporutuan and Onairoan stages used in former papers by the writer have been united under the name Taranakian (See Grange, 1926, p. 334).
Tertiary
Eocene Oligocene Miocene Pliocene
Upper Cretaceous Wangaloan Bortonian Tahuan Waiarekan Ototaran Hutchinsonian Awamoan Tarankian Waitoturan Nukumaruan Castlechffian Pleistocene Recent
(Austrodosinia)
(Phacosoma)
(Dosinia)
(Raina)
(Kereia)
(Kakahuia)
Finlaya
(Notocallista)
(Hyphantosoma)
(Tikia)
Kuia
Marama
(Hina)
Dosinula
Turia ?
Tawera
Bassina
Clausinella ?
(Austrovenus) ?
(Hinemoana)
Eumarcia
(Atamarcia)
Cyclorismina
(Gomphinella)
(Tuangia)
(Callistotapes)
Paphirus
Irona
Notopaphia
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Table 2.—Approximate Range of Species.—Continued.
Tertiary
Eocene Oligocene Miocene Pliocene
Upper Cretaceous Wangaloan Bortonian Tahuan Waiarekan Ototaran Hutchinsonian Awamoan Tarankian Waitoturan Nukumaruan Castlechffian Pleistocene Recent
Dosinia lambata ?
" anus ?
" magna
" densicosta
" waitakiensis
" horrida
" subrosea
" wanganuiensis
" maoriana
" bensoni
" paparoaensis
" waipipiensis
" nukumaruensis
" greyi
" cottoni ?
" waiparaensis
" mackayi
" ongleyi
" perplexa
" suteri
Finlaya parthiana ?
Paradione multistriata
" parki
" trigonalis
Pitar sculpturatus
Callistina thomsoni
" wilckensi
Kuia vellicata
" macdowelli
" singulais
Marama pristina
" ovata
" hurupiensis
" murdochi
" vaga
" pinguis
" tumida
" williamsi
" mackenziei
" hendersoni
Dosinula zelandica
" crebra
" elegans ?
" suboblonga
" uttleyi
" firmocosta
Turia bortonensis
" chattonensis
" pukeuriensis
" waiauensis
" Tawera marshalli
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Tawera bartrumi ?
" errans ?
" subsulcata
" assimilis
" wanganuiensis ?
" spissa
Bassina yatei
" speighti
" parva
Clausinella morgani
Tawera carri
Chione stutchburyi
" crassitesta
" acuminata ?
Notopaphia elegans
Protothaca crassicosta
Cyclorismina woodsi
Eumarcia pareoraensis
" kaawaensis
" plana
" altilunula
" crassa
" crassatelliformis
" curta
" sulcifera
" enysi
" thomsoni
" benhami
Gomphina maorum
Paphia finlayi
Paphirus largillierti
Irona reflexa