Fortification Road/road cut (Eocene of New Zealand)

Where: North Otago, New Zealand (45.2° S, 170.9° E)

• Paleocoordinates: 46.7° S, 162.5° W (Wright 2013)

• coordinate stated in text

• outcrop-level geographic resolution

When: Priabonian (38.0 - 33.9 Ma)

Environment/lithology: transition zone or lower shoreface; tuffaceous, red, calcareous conglomerate and massive, white limestone

• it seems likely that individual pebbles were overturned, probably in storm events, about once or twice in a year.

•The mean-water depth of the Alma/Fortification Road rockground is estimated to be around 25 m.

•moderately current-swept channel adjacent to small volcanic islands and seamounts

• The section is dominated by numerous small rhodoliths. Higher in the section, basalt pebbles are abundant and the pebbly tuff beds are overlain by 1.2 m of massive, white limestone that grades up into highly bioturbated, unfossiliferous gray-brown tuffs. Reddish basalt pebbles in the upper part of the section here are considered most likely to have been derived from subaerial lava flows, although most basalt clasts are probably of submarine origin.

•"mobile rockground" of encrusted pebbles and cobbles in calcareous, tuffaceous volcanic conglomerate horizons.

Size classes: macrofossils, mesofossils

Collection methods: chemical, sieve,

• Preparation: both encrusted clasts and iso1ated bryozoan fragments were soaked overnight in undiluted domestic bleach (NaOCl solution), following controlled sonication (usually several seconds), samples were thoroughly washed by gentle tumbling in clean water, then dried.

•Samples selected for study of agglutinated sediment particles were gently washed without bleaching or sonication.

Primary reference: D. E. Lee, J. Scholz, and D. P. Gordon. 1997. Paleoecology of a Late Eocene Mobile Rockground Biota from North Otago, New Zealand. Palaios 12(6):568-581 [L. Liow/F. Franeck]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 172816: authorized by Lee Hsiang Liow, entered by Franziska Franeck on 26.08.2015

Creative Commons license: CC0 (CC0)

Taxonomic list

• non-bryozoan taxa not entered
Show authors, comments, and common names
Gymnolaemata
 Cheilostomata - Aspidostomatidae
Macroporina waimatukuensis
 Cheilostomata - Microporidae
Micropora sp.
Micropora sp. Gray 1848
 Cheilostomata - Cribrilinidae
Cribrilinidae indet., Puellina sp., ? Figularia sp.
Cribrilinidae indet. Hincks 1880
gen. et sp. nov.
? Figularia sp. Jullien 1886
 Cheilostomata - Chaperiidae
Chaperiopsis "sp. 1"
 Cheilostomata - Calloporidae
Onychoblestrum hastingsae
 Cheilostomata - Romancheinidae
? Romancheinidae indet., Escharella sp., Escharoides sp., Exochella "sp. 1"
Escharoides sp. Milne Edwards 1836
 Cheilostomata - Buffonellodidae
cf. Buffonellodes sp.
cf. Buffonellodes sp.
? cf. Buffonellodes sp.
 Cheilostomata - Escharinidae
Escharina "sp. 1", Escharina "sp. 2"
 Cheilostomata - Umbonulidae
? Umbonulidae indet.
 Cheilostomata - Celleporidae
Celleporidae indet., Buffonellaria sp., ? Celleporina "sp. 1"
 Cheilostomata - Phidoloporidae
Phidoloporidae indet.
Phidoloporidae indet. Gabb and Horn 1862
 Cheilostomata - Gigantoporidae
? Cosciniopsis sp.
 Cheilostomata - Lacernidae
Cribellopora "sp. 1"
 Cheilostomata - Porinidae
Porina "sp. 1"
 Cheilostomata - Schizoporellidae
Phonicosia sp.
 Cheilostomata - Phylactellidae
Nimba sp.
Nimba sp. Jullien 1903
 Cheilostomata - Smittinidae
Smittoidea "sp. 1", Smittoidea "sp. 2"
 Cheilostomata - Cellariidae
Cellaria "sp. 1"
Cellaria "sp. 1" Ellis and Solander 1786
Stenolaemata
 Cyclostomatida - Annectocymidae
Annectocyma sp.
 Tubuliporata - Horneridae
Hornera sp.
Hornera sp. Lamouroux 1821
 Tubuliporata - Plagioeciidae
Plagioecia sp.
Plagioecia sp. Canu 1918
 Tubuliporata - Frondiporidae
Filifascigera sp.
Filifascigera sp. d'Orbigny 1853
misspelled in the publication as Filifasgera, pers. comm. D. Gordon 08/2015
 Tubuliporata - Cinctiporidae
? Cinctiporidae indet.
? Cinctiporidae indet. Boardman et al. 1992
 Tubuliporata - Tubuliporidae
Platonea sp.
Platonea sp. Canu and Bassler 1920
 Tubuliporata - Diaperoeciidae
Diaperoecia sp., Entalophoroecia sp.
Diaperoecia sp. Canu 1918
 Tubuliporata - Lichenoporidae
Disporella sp.