Lancefield Channel Fill (Unit IVb) (Pleistocene of Australia)

Where: Victoria, Australia (37.3° S, 144.7° E: paleocoordinates 37.3° S, 144.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• "3.5 m of an alluvial clay overlying Pliocene basalts" including an approximate 0.1 m thick channel fill bed that is "roughly contemporary" with the overlying bone bed and radicarbon dated at 25,200 +/- 800 and 26,600 +/- 650 ybp

• bed-level stratigraphic resolution

Environment/lithology: mire or swamp; conglomeratic claystone

• "free water occupied the site, at least seasonally" but "the surrounding plains were virtually treeless" with probable "annual rainfall... slightly less than 500 mm/year"
• "gravelly clay... Quartz is the dominant clastic material"

Size classes: macrofossils, mesofossils

Collected in 1974, 1975, 1977

Collection methods: bulk, quarrying, sieve,

• channel fill was excavated and "screened"

Primary reference: R. Gillespie, D. R. Horton, P. Ladd, P. G. Macumber, T. H. Rich, R. Thorne, and R. V. S. Wright. 1978. Lancefield swamp and the extinction of the Australian megafauna. Science 200:1044-1048 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 92837: authorized by John Alroy, entered by John Alroy on 01.12.2009, edited by Albert Garcia Selles

Creative Commons license: CC BY (attribution)

Taxonomic list

• all plants are represented by pollen

•the "same megfaunal species" as in the bone bed are present but not listed; it is assumed that the two dominant species (Macropus titan and Protemnodon anak) are present but the others, all with frequencies of < 1%, are omitted

Mammalia
 Dasyuromorphia - Dasyuridae
Sarcophilus sp. Cuvier 1837 Tasmanian devil
 Dasyuromorphia - Thylacinidae
Thylacinus cf. cynocephalus Harris 1808 thylacine
 Diprotodontia - Macropodidae
Macropus cf. rufogriseus Desmarest 1817 kangaroo
Macropus cf. dorsalis Gray 1837 black-striped wallaby
"Macropus titan" = Macropus (Macropus) giganteus Shaw 1790 eastern grey kangaroo
cf. Thylogale sp. Gray 1837 pademelon
Protemnodon anak Owen 1874 kangaroo
 Diprotodontia -
Simosthenurus occidentalis Glauert 1910 short-faced kangaroo
Propleopus sp. Longman 1924 diprotodont marsupial
 Diprotodontia - Vombatidae
Vombatus sp. Saint-Hillaire 1803 common wombat
 Diprotodontia - Potoroidae
Aepyprymnus rufescens Gray 1837 rufous rat-kangaroo
 Rodentia - Muridae
Muridae indet. Illiger 1811 mouse
Mastacomys fuscus broad-toothed rat
Amphibia
 Temnospondyli - Brachyopidae
"Banksia sp." = Banksiops
"Banksia sp." = Banksiops Warren and Marsicano 2000 tetrapod
Angiospermae
 Arales - Lemnaceae
Lemna sp. Linnaeus 1753 duckweed
 Alismatales - Juncaginaceae
Triglochin sp. Linnaeus 1753 arrowgrass
 Poales - Cyperaceae
Cyperaceae indet. Jussieu 1789 sedge
 Poales - Poaceae
Poaceae indet. Barnhart 1895 grass
Dicotyledoneae
 Myrtales - Myrtaceae
Myrtaceae indet. de Jussieu 1789 myrtle
Leptospermum sp. Forster and Forster 1775 myrtle