Otamita Stream (Bed "C") (Triassic of New Zealand)

Also known as Hokonui Hills

Where: New Zealand (46.0° S, 168.7° E: paleocoordinates 74.4° S, 129.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Carnian (237.0 - 228.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

• "massive bed of dark, hard, but fissile crumbling shale, with concretionary nodules in its lower part" (Trechmann 1917)

Size class: macrofossils

Preservation: mold/impression

Collected by Trechmann & Marshall

Primary reference: C. T. Trechmann. 1917. The Trias of New Zealand. Quarterly Journal of the Geological Society of London 73(3):165-246 [A. Dunhill/B. Allen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 201932: authorized by Alex Dunhill, entered by Bethany Allen on 11.06.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Terebratulidae
Terebratula pachydentata n. sp. Trechmann 1917
 Terebratulida -
"Terebratula cf. hungarica" = Goniothyris hungarica
"Terebratula cf. hungarica" = Goniothyris hungarica Suess and Szajnocha 1881
Bivalvia
 Arcida - Parallelodontidae
Macrodon cf. curionii Bittner 1895 clam
 Pectinida - Plicatulidae
Pseudoplacunopsis placentoides n. sp. Trechmann 1917 scallop
 Pectinida - Buchiidae
Hokonuia limaeformis n. gen. n. sp.
Hokonuia limaeformis n. gen. n. sp. Trechmann 1917 scallop
 Ostreida - Cassianellidae
Cassianella sp. Beyrich 1862 oyster
 Ostreida - Halobiidae
Halobia cf. neumayri Bittner 1891 oyster
Halobia hochstetteri Mojsisovics 1874 oyster
 Cardiida - Kalenteridae
"Pleurophorus zealandicus n. sp." = Triaphorus zealandicus
"Pleurophorus zealandicus n. sp." = Triaphorus zealandicus Trechmann 1917 clam
 Cardiida - Arcticidae
Anisocardia parvula n. sp. Trechmann 1917 clam
 Cardiida - Palaeocarditidae
Palaeocardita quadrata Trechmann 1917 clam
 Trigoniida - Trigoniidae
"Myophoria otamitensis n. sp." = Maoritrigonia otamitensis
"Myophoria otamitensis n. sp." = Maoritrigonia otamitensis Trechmann 1917 clam
 Trigoniida - Trigonodidae
Anodontophora angulata n. sp., Anodontophora edmondiiformis n. sp., "Anodontophora ovalis n. sp." = Unionites ovalis
Anodontophora angulata n. sp. Trechmann 1917 clam
Anodontophora edmondiiformis n. sp. Trechmann 1917 clam
"Anodontophora ovalis n. sp." = Unionites ovalis Trechmann 1917 clam
 Protobranchia -
Palaeoneilo otamitensis n. sp. Trechmann 1917 clam
Palaeoneilo cf. praeacuta Klipstein 1843 clam
 Protobranchia - Nuculanidae
"Leda semicrenulata n. sp." = Nuculana semicrenulata
"Leda semicrenulata n. sp." = Nuculana semicrenulata Trechmann 1917 pointed nut clam
Gastropoda
 Pleurotomariida - Pleurotomariidae
"Pleurotomaria (Sisenna) hectori n. sp." = Pleurotomaria hectori, Pleurotomaria hokonuiensis n. sp.
"Pleurotomaria (Sisenna) hectori n. sp." = Pleurotomaria hectori Trechmann 1917 snail
Pleurotomaria hokonuiensis n. sp. Trechmann 1917 snail
 Trochoidea - Trochidae
Trochus (Tectus) marshalli n. sp. Trechmann 1917 top snail
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
 Ceratitida - Arcestidae
Arcestes sp. Suess 1865 ceratite
 Phylloceratida - Discophyllitidae
Discophyllites sp. Hyatt 1900 ammonite
Discophyllites cf. ebneri Mojsisovics 1896 ammonite
 Nautilida -
Nautilida indet. Agassiz 1847 nautiloid
 Nautilida - Clydonautilidae
"Clydonautilus (Proclydonautilus) cf. spirolobus" = Proclydonautilus spirolobus
"Clydonautilus (Proclydonautilus) cf. spirolobus" = Proclydonautilus spirolobus Dittmar 1866 nautiloid
 Nautilida - Grypoceratidae
Grypoceras cf. mesodicum Hauer 1846 nautiloid