Where: Indian Ocean (25.3° S, 100.3° E: paleocoordinates 25.3° S, 100.3° E)

• coordinate stated in text

• local area-level geographic resolution

When: Late/Upper Albian (105.3 - 99.6 Ma)

• Aucellina gryphaeoides Sowerby, 1836 is not recorded below the base of the Mortoniceras inflatum Ammonite Zone in Europe (Lehmann et al., 2008), and Bhimaites stoliczkai Kossmat, 1898 is found to have a similarly timed first appearance datum there (Gale et al., 2011). The type specimen for B. stoliczkai was described from the Odiyam Member of the Karai Formation in southern India (Stoliczka, 1865), a unit that straddles the Albian-Cenomanian boundary (Sundaram et al., 2001). The temporal range of both these taxa extends only into the early Cenomanian (Morter and Wood, 1983; Kennedy and Klinger, 2014). Further refinement comes with the extinction of Planohamites Monks, 2002 at the end of the Albian, 100.5 Ma (Monks, 2002; Gradstein et al., 2012). The presence of these temporally restricted taxa resolves the age of the Batavia Knoll sandstone, constraining it to the late Albian and probably the early late Albian, ca. 103 to 101 Ma. The benthic foraminiferal assemblages therefrom were deemed to be of late Albian age. This is consistent with preliminary calcareous microfossil analysis conducted by P. Quilty (personal communication, 2014).

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

Size class: macrofossils

Preservation: mold/impression

Collected in 2011

• Repository: Western Australian Museum

Primary reference: T. J. Wild and J. D. Stilwell. 2016. First Cretaceous (Albian) invertebrate fossil assemblage from Batavia Knoll, Perth Abyssal Plain, eastern Indian Ocean: taxonomy and paleoecological significance. Journal of Paleontology 90:959-980 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 181562: authorized by Matthew Clapham, entered by Matthew Clapham on 15.09.2016

Creative Commons license: CC BY (attribution)