Where: Irian Jaya, Indonesia (4.1° S, 135.8° E: paleocoordinates 40.8° S, 130.5° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Aiduna Formation, Artinskian (290.1 - 279.3 Ma)
• Float boulder. Aktastinian to early Baigendzhinian = early Artinskian.
• bed-level stratigraphic resolution
Environment/lithology: marine; micaceous sandstone and carbonaceous siltstone
Size class: macrofossils
Preservation: mold/impression, original calcite
Collection methods: bulk, chemical, mechanical,
• Some acid leaching was conducted.
Primary reference: N. W. Archbold. 1991. Early Permian Brachiopoda from Irian Jaya. BMR Journal of Australian Geology & Geophysics 12:287-296 [D. Bottjer/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 42907: authorized by David Bottjer, entered by Matthew Clapham on 06.08.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Neochonetes (Sommeriella) irianensis n. sp., Sulcataria skwarkoi n. sp., Chonetinella aidunaensis n. sp.
Neochonetes (Sommeriella) irianensis n. sp. 1 DV int. mould, 3 DV ext. mould, 6 VV int. mould, 8 VV ext. mould
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Aulosteges tenuispinosus n. sp.
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Rhynchonellata | |
Spiriferinidina indet. Ivanova 1972 | |
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Neospirifer sp. Fredericks 1919 |