Crisp & Gunns Quarry, Head of Arthur Street (Triassic of Australia)

Also known as Tasmaniosaurus holotype

Where: Tasmania, Australia (42.9° S, 147.3° E: paleocoordinates 76.0° S, 132.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Poets Road Siltstone Member (Knocklofty Formation), Induan (252.2 - 251.2 Ma)

• Palynology and vertebrate biostratigraphy have been used to argue for an earliest Triassic age for the Knocklofty Formation (Cosgriff 1974; Camp & Banks 1978).

•Vertebrates collected at several layers within the quarry: Chomatobatrachus comes from a 4 m thick sequence of red siltstones at the very base of the quarry. Tasmaniosaurus was found in a gray siltstone that comes from 40 m above the base of the quarry. Blinasaurus from a sandstone from higher up in the quarry than Tasmaniosaurus

• member-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified, micaceous, gray, carbonaceous shale and red siltstone

• "Ponds or small lakes" (Camp & Banks 1978)
• Tasmaniosaurus comes from a "hard, light to medium grey, blocky, micaceous shale" "The reptile occurs in a coarse-grained, well-sorted, siltstone with laminae about 0.1 mm thick. The rock consists predominantly of very angular to angular quartz grains and muscovite flakes in equal porportions and carbonaceous matter" (Camp & Banks 1978)

•Rotaurisaurus and Chromatobatrachus were both collected from red siltstones and Banksiops townrowi from a yellow sandstone.

Size class: macrofossils

Collected by MR Banks, JW Cosgriff in the 1960s

Collection methods: surface (float),

• UTGD: Geology Department, University of Tasmania, Hobart.

Primary reference: J. W. Cosgriff. 1974. Lower Triassic Temnospondyli of Tasmania. The Geological Society of America, Special Paper 149:1-134 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117149: authorized by Richard Butler, entered by Richard Butler on 15.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Perleidiformes - Perleididae
Cleithrolepis sp.1 Egerton 1864
Osteichthyes
 Temnospondyli - Brachyopidae
"Blinasaurus townrowi" = Banksiops townrowi
"Blinasaurus townrowi" = Banksiops townrowi Cosgriff 1974 tetrapod
UTGD 89381, right lower jaw
 Temnospondyli - Lapillopsidae
Rotaurisaurus contundo n. gen. n. sp.2
Rotaurisaurus contundo n. gen. n. sp.2 Yates 1999 tetrapod
UTGD 87795, partial skull
 Temnospondyli - Lydekkerinidae
Chomatobatrachus halei Cosgriff 1974 tetrapod
UTGD 87789, 87790, 87791, 87792, 87793, 87794, 87796, 87797
Reptilia
 Eosuchia -
Tasmaniosaurus triassicus n. gen. n. sp.1
Tasmaniosaurus triassicus n. gen. n. sp.1 Camp and Banks 1978 archosauromorph
UTGD 54655, partial skeleton