Alexander Mudstone, Inangahua Outlier, 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: Alexander 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; calcareous mudstone

• "Very low energy, outer offshore shelf"
• "35+ m. Massive, calcareous mudstone."

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 40529: authorized by Michael Foote, entered by Michael Foote on 24.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Pectinida - Pterinopectinidae
Pterinopecten sp. Hall 1883 scallop
 Ostreida - Pterineidae
 Cardiidia - Grammysiidae
Prothyris sp. Meek 1871 clam
 Modiomorphida - Modiomorphidae
Modiomorpha kaka n. sp. clam
Modiomorpha sp. Hall and Whitfield 1869 clam
 Trigoniida - Eoschizodidae
? Eoschizodus sp. Cox 1951 clam
 Nuculida -
 Protobranchia - Sareptidae
 Protobranchia - Nuculanidae
Phestia suggatei n. sp. pointed nut clam
Gastropoda
 Bellerophontida -
"Bellerophontacea indet." = Bellerophontoidea
"Bellerophontacea indet." = Bellerophontoidea M'Coy 1851 snail
Cephalopoda
 Nautiloidea -
Nautiloidea indet. Agassiz 1847 nautiloid
orthocones
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Strophomenata
 Strophomenida -
Rhynchonellata
 Terebratulida - Meganterididae
 Spiriferida - Acrospiriferidae
Acrospirifer sp. Wedekind 1926