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

unclassified
  -
Trilobita
 Phacopida - Homalonotidae
Bivalvia
 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
Cephalopoda
 Nautiloidea -
Nautiloidea indet.2 Agassiz 1847 nautiloid
orthocones
Bryozoa
  -
Bryozoa indet.2 Ehrenberg 1831
Osteichthyes
 Arthrodira - Actinolepidae
Actinolepis sp.1 Agassiz 1845 armour-plated fish
Crinoidea
  -
Crinoidea indet.2 Miller 1821 Sea lily
Strophomenata
 Productida - Chonetidae
Chonetes "sp. A"2 Fischer de Waldheim 1830
 Strophomenida - Leptostrophiidae
Rhynchonellata
 Terebratulida - Meganterididae
 Spiriferida - Acrospiriferidae
 Rhynchonellida -
Lingulata
 Lingulida - Disciniidae
 Lingulida - Lingulidae
Lingula sp.2 BruguiƩre 1797