Jan Juc Beach - Puebla Fm (Miocene of Australia)

Also known as Assemblage 8; FL 23

Where: Victoria, Australia (38.3° S, 144.3° E: paleocoordinates 49.7° S, 142.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Puebla Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From Puebla Fm, which locally conformably overlies the Jan Juc Fm. Stratigraphy is discussed by Raggatt and Crepsin (1953) and Singleton (1968). AGE: The age of the assemblage is Early Miocene and is Longfordian. STRATIGRAPHIC POSITION: From lower 20 m of formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, pyritic, argillaceous siltstone and lithified, gray limestone

• ENVIRONMENT: Environment not reported in text, siliciclastic.
• SPECIFIC LITHOLOGY: Grey pyritic clayey silt with bands of hard dark grey limestone. LITHIFICATION: Assumed poorly lithified on the basis of contrast between background siltstone and "hard" limestone.

Size class: macrofossils

Collection methods: COLLECTOR: Probably multiple collectors from same locality, including the author, and combination with existing museum collections. REPOSITORY: Museum of Victoria.

Primary reference: T. A. Darragh. 1985. Molluscan biogeography and biostratigraphy of the Tertiary of southeastern Australia. Alcheringa 9:83-116 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71239: authorized by Austin Hendy, entered by Austin Hendy on 22.04.2007, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia and scaphopoda. NOMENCLATURE: Utilized modern nomenclature, with species-level assignments.
Bivalvia
 Nuculida - Nuculidae
Ennucula tenisoni Pritchard 1896 nut clam
 Arcida - Limopsidae
Limopsis chapmani Singleton 1932 clam
 Pandorida - Clavagellidae
 Cardiida - Tellinidae
Tellina cainozoica Tenison Woods 1877 tellin clam
 Cardiida - Solecurtidae
Solecurtus legrandi Tenison Woods 1876 clam
 Cardiida - Veneridae
Gastropoda
 Sorbeoconcha - Cassidae
"Antephalium sufflatus" = Semicassis (Antephalium)
"Antephalium sufflatus" = Semicassis (Antephalium) snail
 Sorbeoconcha - Cypraeidae
Notadusta victoriana Schilder 1935 cowry
Umbilia (Umbilia) angustior Pritchard 1896 cowry
 Neogastropoda - Buccinidae
Zemira australis true whelk
SUBSPECIES: Z. australis antecursoria
 Neogastropoda - Ancillariidae
"Baryspira tatei" = Amalda (Baryspira)
"Baryspira tatei" = Amalda (Baryspira) snail
 Neogastropoda - Volutidae