Adam Mudstone, Inangahua & Waitahu Outliers, Reefton area, New Zealand (Devonian of New Zealand)

Where: New Zealand (42.1° S, 171.9° E: paleocoordinates 23.1° S, 178.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Adam Mudstone Formation, Emsian (407.6 - 393.3 Ma)

• Reefton Group is not very well dated, as there are few correlatable fossils.

• formation-level stratigraphic resolution

Environment/lithology: marine; silty mudstone and calcareous siltstone

• "Low energy offshore shelf with sporadic higher energy storm events. Breaker point bar at top and bottom built out by longshore drift."
• "120-200m. Massive silty mudstone; minor siltstone & sandstone. Highly fossiliferous calcareous siltstone horizons. Thin sandstone at top and base."

Primary reference: M. A. Bradshaw. 1999. Lower Devonian bivalves from the Reefton Group, New Zealand. Memoirs of the Association of Australasian Palaeontologists 20:1-171 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40525: authorized by Michael Foote, entered by Michael Foote on 24.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Homalonotidae
 Cyrtodontida - Cyrtodontidae
Cyrtodonta sp. Billings 1858 clam
 Pectinida - Pterinopectinidae
Pterinopecten sp. Hall 1883 scallop
 Ostreida - Pterineidae
 Carditida - Astartidae
Nargunella cf. nitida Talent 1963 clam
 Cardiidia - Sanguinolitidae
"Sphenotus sp." = Sanguinolites2
"Sphenotus sp." = Sanguinolites2 M'Coy 1844 clam
 Cardiidia - Grammysiidae
 Modiomorphida - Modiomorphidae
Modiomorpha sp. Hall and Whitfield 1869 clam
Goniophora sp. Phillips 1848 clam
 Solenida - Orthonotidae
Orthonota sp. Conrad 1841 clam
 Trigoniida - Eoschizodidae
? Eoschizodus sp. Cox 1951 clam
 Nuculida -
 Protobranchia - Malletiidae
 Protobranchia - Sareptidae
 Protobranchia - Nuculanidae
Phestia ranfti n. sp. pointed nut clam
Phestia hegani n. sp. pointed nut clam
Phestia suggatei n. sp. pointed nut clam
Phestia pluvia n. sp. pointed nut clam
 Nautiloidea -
Nautiloidea indet.2 Agassiz 1847 nautiloid
Bryozoa indet.2 Ehrenberg 1831
 Arthrodira - Actinolepidae
Actinolepis sp.1 Agassiz 1845 armour-plated fish
Crinoidea indet.2 Miller 1821 Sea lily
 Productida - Chonetidae
Chonetes "sp. A"2 Fischer de Waldheim 1830
 Strophomenida - Leptostrophiidae
 Terebratulida - Meganterididae
 Spiriferida - Acrospiriferidae
 Rhynchonellida -
 Lingulida - Disciniidae
 Lingulida - Lingulidae
Lingula sp.2 BruguiƩre 1797