Where: Chile (47.0° S, 72.4° W: paleocoordinates 47.9° S, 66.1° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Guadal Formation, Early/Lower Miocene (23.0 - 16.0 Ma)
• STRATIGRAPHIC RELATIONS: From the Guadal Fm, which is overlain by the Galera Fm (Early-Middle Miocene). AGE: Late Oligocene-Early Miocene in text. Composition of the fauna reveals close similarity with those of the Patagoniano, and in particular the Monte Leon Fm. An Early Miocene age could be moe precise on the basis of sequence stratigraphic events. Early Miocene is assigned here. STRATIGRAPHIC POSITION: From upper part of the Guadal Formation.
• bed-level stratigraphic resolution
Environment/lithology: offshore; lithified, gray sandstone
Size class: macrofossils
Preservation: cast, mold/impression
Collected by Frassinetti & Covacevich in 1986-1988
Collection methods: surface (in situ),
• COLLECTOR: Presumably Frassinetti, C., and Covacevich, C. (1986-1988). REPOSITORY: Museo Nacional de Historia Natural, Santiago, Chile
Primary reference: D. Frassinetti and V. Covacevich. 1999. Invertibrados fósiles marinos de la Formación Guadal (Oligoceno superio-Mioceno inferior) en Pampa, Castillo region, región de Aisén, Chile. Servico Nacional de Geologia y Mineria Chile Boletin 51:1-96 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 78429: authorized by Austin Hendy, entered by Austin Hendy on 06.02.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Polychaeta | |
Serpula sp. Linnaeus 1758 | |
Rhynchonellata | |
Terebratella aff. patagonica Sowerby 1846 | |
Bivalvia | |
Neilo ornata Sowerby 1846 clam | |
Brachidontes andinus Ortmann 1900 mussel | |
""Chlamys" centralis" = Jorgechlamys centralis
""Chlamys" centralis" = Jorgechlamys centralis Sowerby 1846 scallop | |
Cucullaea alta Sowerby 1846 clam | |
Panopea sp. Menard 1807 clam
Panopea nucleus Ihering 1899 clam | |
Periploma sp. Schumacher 1816 clam | |
Lahillia sp. Cossmann 1899 clam | |
Trachycardium puelchum Sowerby 1846 cockle | |
Chione argentina venus clam
Chione patagonica Philippi 1887 venus clam
? Eurhomalea navidadiformis Frassinetti and Covacevich 1999 venus clam | |
Gastropoda | |
Trochita sp. Schumacher 1817 slipper shell | |
Struthiolarella ameghinoi Ihering 1897 snail | |
Trophon cf. patagonicus Sowerby 1846 murex snail | |
Cancellaria sp. Lamarck 1799 snail | |
Serpulorbis sp. Sasso 1827 worm shell | |
Turritella ambulacrum Sowerby 1846 turret shell | |
"Gibbula" dalli Ihering 1897 top snail |