Walsh River [Roma Series] (Cretaceous of Australia)

Where: Queensland, Australia (16.5° S, 143.7° E: paleocoordinates 55.1° S, 127.0° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Doncaster Member (Wallumbilla Formation), Aptian (125.0 - 113.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Roma Series [here treated as a group], for which lithostratigraphic relationships are not stated. AGE: Gargasian or Bedoulian = Middle Aptian, on the basis of ammonoid biostratigraphy. STRATIGRAPHIC POSITION: From unknown position in local section.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, blue claystone

• ENVIRONMENT: Not stated in text, but apparently shallow marine.
• SPECIFIC LITHOLOGY: Bluish claystones. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: surface (in situ),

• COLLECTOR: Not stated in text. REPOSITORY: Queensland Museum (QM).

Primary reference: F. W. Whitehouse. 1926. The Cretaceous Ammonoidea of Eastern Australia. Memoirs of the Queensland Museum 8(3):195-242 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 83901: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Representative for ammonoidea. Other taxa may be present but are not reported in text. NOMENCLATURE: Authoritative publication, using antiquated taxonomy, but with species resolution identification where possible.
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Cephalopoda
 Ammonitida - Oppeliidae
Aconeceras walshense, "Gyaloceras smithi n. sp." = Aconeceras (Gyaloceras) smithi, Sanmartinoceras fontinale, Sanmartinoceras olene
Aconeceras walshense Etheridge 1892 ammonite
"Gyaloceras smithi n. sp." = Aconeceras (Gyaloceras) smithi Whitehouse 1927 ammonite
Sanmartinoceras fontinale Hudleston 1890 ammonite
Sanmartinoceras olene Tenison-Woods 1883 ammonite
 Ammonitida - Ancyloceratidae
Australiceras transiente n. sp., Australiceras gracile, Australiceras robustum n. sp., Australiceras irregulare, Australiceras jacki, Tropaeum undatum n. sp., Tropaeum rarum n. sp., Tropaeum australe
Australiceras transiente n. sp. Whitehouse 1926 ammonite
Australiceras gracile Sinzow 1908 ammonite
Australiceras robustum n. sp. Whitehouse 1926 ammonite
Australiceras irregulare Tenison-Woods 1882 ammonite
Australiceras jacki Etheridge 1880 ammonite
Tropaeum undatum n. sp. Whitehouse 1926 ammonite
Tropaeum rarum n. sp. Whitehouse 1926 ammonite
Tropaeum australe Moore 1870 ammonite
 Ammonitida - Acrioceratidae
Toxoceratoides taylori
Toxoceratoides taylori Etheridge 1892 ammonite