Where: Heard Island and McDonald Islands (53.0° S, 73.4° E: paleocoordinates 52.5° S, 72.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Drygalski Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• "Drygalski Agglomerate". According to Truswell et al., 2005), Fleming (1957) believed the Drygalski Formation to be Pliocene (or possibly Late Miocene or earliest Pleistocene) on the basis of the occurrence of Austrochlamys heardensis, which he described as Chlamys (Jonkers 2003, Quilty 2004). The range of marine and terrestrial microfossils preserved in the Cape Lockyer sample suggests that the former (late Miocene) age limit is more probable and thus consistent with the radiometric dating reported by Jonkers (2003).

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, volcaniclastic conglomerate

Size class: macrofossils

Collected by R.S. Cohen, D. Lawton in 1969; reposited in the USNM

Primary reference: P. G. Quilty, C. V. Murray-Wallace, and J. M. Whitehead. 2004. Austrochlamys heardensis (Fleming, 1957) (Bivalvia: Pectinidae) from Central Kerguelen Plateau, Indian Ocean: palaeontology and possible tectonic significance. Antarctic Science 16:329-338 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 209139: authorized by Matthew Clapham, entered by Matthew Clapham on 25.04.2020

Creative Commons license: CC BY (attribution)