AL90 Site (Miocene of Australia)

Also known as Riversleigh; Alan's Ledge 1990

Where: Queensland, Australia (19.0° S, 138.6° E: paleocoordinates 28.0° S, 135.8° E)

• coordinate estimated from map

When: Faunal Zone C zone, Middle Miocene (16.0 - 11.6 Ma)

• "early to middle Miocene... approximately 15 to 20 million years old" (Hand and Kirsch, 2003); Middle Miocene based on Woodhead et al. (2014)

• group of beds-level stratigraphic resolution

Environment/lithology: cave; lithology not reported

• "probably represents a pit-fall trap" and "appears to have had a restricted entrance (or been water-filled... [the bats] appear to have roosted in the cave". AL90 is interpreted as a rainforest community.

Size classes: macrofossils, mesofossils

Preservation: original phosphate

Primary reference: S. J. Hand and J. A. W. Kirsch. 2003. Archerops, a new annectent hipposiderid genus (Mammalia: Microchiroptera) from the Australian Miocene. Journal of Paleontology 77(6):1139-1151 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 53951: authorized by Mark Uhen, entered by Mark Uhen on 19.09.2005, edited by Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

 Chiroptera - Hipposideridae
Hipposideridae indet. Lydekker 1891 leaf-nosed bat
Brachipposideros-Rhinonicteris group
Archerops annectens n. gen. n. sp. Hand and Kirsch 2003 leaf-nosed bat
 Peramelemorphia - Peramelidae
Crash bandicoot n. gen. n. sp.4
Crash bandicoot n. gen. n. sp.4 Travouillon et al. 2014 bandicoot
QM F56245 (holotype), right maxilla containing M1-3 and alveoli for M4
 Diprotodontia - Macropodidae
Ganguroo bilamina2 Cooke 1997 kangaroo
 Diprotodontia -
Bulungamayinae indet. Flannery et al. 1982 diprotodont marsupial
Balbarinae indet. Flannery et al. 1982 diprotodont marsupial
 Diprotodontia - Diprotodontidae
Nimbadon lavarackorum1 Hand et al. 1993 diprotodont marsupial
 Squamata - Scincidae
Egernia gillespieae n. sp.3 Thorn et al. 2019 skink
All material from one block and given one specimen number as an associated skeleton of one indivisual. QM F57957a (holotype), near-complete left adult mandible missing the retroarticular process and an anterior fragment of the symphysis; 57957b, left premaxilla; c, left maxilla; d, frontal; e, left nasal; f, left quadrate; g, left pterygoid; h, right pterygoid; i, left squamosal; j, right squamosal; k, left humerus; l, left ulna
 Serpentes -
 Gruiformes - Rallidae
Australlus gagensis n. sp.5 Worthy and Boles 2011 rail
 Dromornithiformes - Dromornithidae
Dromornithidae indet. F├╝rbringer 1888 bird