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Regatta Point - Early Pleistocene (Pleistocene to of Australia)

Where: Tasmania, Australia (42.2° S, 145.3° E: paleocoordinates 42.8° S, 145.2° E)

• coordinate stated in text

When: Early/Lower Pleistocene to Early/Lower Pleistocene (2.6 - 0.1 Ma)

• The Regatta Point fossils are contained within transported blocks of sediment which have been dated by palynological correlation as Early or possibly Middle Pleistocene (Macphail et al. 1993). Dated as Late Pliocene-Early Pleistocene by Hill and Macphail, 1985; Wells & Hill, 1989.

Environment/lithology: lacustrine; gray mudstone and poorly lithified, fine-grained sandstone

• The blocks have been transported an unkwown distance from the original site of deposition. It is unlikely that they have travelled far, since they are large (1 m3), close together and very angular, with little sign of erosion.

•The fine-grained nature of the sediment matrix indicates distal deposition in a low-energy environment such as a lake, river estuary or a shallow inland harbour such as the one existing there today (Wells & Hill, 1989).

• The fossil occur in soft mudstone blocks situated in a glacifluvial outwash gravel above an Early Eocene mudstone.

•The mudstone blocks are composed of quartz grains, black organic fragments,

•whole plant structures and cream-coloured mud flakes all dispersed through a dark brown-grey mudstone matrix (Wells & Hill, 1989). Macrofossils from Jordan, 1997 were extracted from mudstone, siltstone and sandstone clasts within the gravels.

Size classes: macrofossils, microfossils

Preservation: adpression, original sporopollenin

Collection methods: bulk, chemical, hydroflouric, sieve

• Repository: Department of Plant Science at the University of Tasmania.

•pollen count min. 400 identifiable pollen and spores (Jordan et al., 1995).

Primary reference: G. J. Jordan, M. K. Macphail, R. Barnes and R. S. Hill. 1995. An Early to Middle Pleistocene Flora of Subalpine Affinities in Lowland Western Tasmania. Australian Journal of Botany 43(2):231-242 [C. Jaramillo/C. Jaramillo] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 166707: authorized by Carlos Jaramillo, entered by Andrés Cárdenas on 22.02.2015, edited by Carlos Jaramillo

Creative Commons license: CC BY (attribution)