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 78425: authorized by Austin Hendy, entered by Austin Hendy on 06.02.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Sedentaria | |
Serpula sp. Linnaeus 1758 | |
Bivalvia | |
Pholadomya (Bucardiomya) sp. Rollier 1912 clam | |
Pholadidea patagonica Philippi 1887 clam | |
Patagonicardium philippi cockle | |
Lahillia sp. Cossmann 1899 clam | |
Tellina "sp. 1" Linnaeus 1758 tellin clam
Tellina "sp. 2" Linnaeus 1758 tellin clam | |
Dosinia aff. meridionalis, Chione argentina, Chione patagonica, "Chione darwini" = Ameghinomya darwini, ? Eurhomalea navidadiformis
Dosinia aff. meridionalis venus clam
Chione argentina venus clam
Chione patagonica Philippi 1887 venus clam
"Chione darwini" = Ameghinomya darwini Philippi 1887 venus clam
? Eurhomalea navidadiformis Frassinetti and Covacevich 1999 venus clam | |
Solena sp. Mörch 1853 clam | |
Pleuromeris elegantoides Ortman 1902 clam
Cardiocardita inaequalis Philippi 1887 clam | |
"Zygochlamys geminatus" = Zygochlamys geminata, ""Chlamys" centralis" = Jorgechlamys centralis
"Zygochlamys geminatus" = Zygochlamys geminata Sowerby 1846 scallop
""Chlamys" centralis" = Jorgechlamys centralis Sowerby 1846 scallop | |
Pinna magellanica oyster | |
Crassostrea aff. hatcheri Ihering 1899 oyster | |
Arca (Arca) patagonica Ihering 1897 ark | |
Cucullaea alta Sowerby 1846 clam | |
Neilo ornata Sowerby 1846 clam | |
Gastropoda | |
Trochita sp. Schumacher 1817 slipper shell
Calyptraea sp. Lamarck 1799 slipper shell | |
Serpulorbis sp. Sasso 1827 worm shell | |
Semicassis ovulum Ortmann 1900 snail | |
Struthiolarella ameghinoi Ihering 1897 snail | |
Ficus carolina d'Orbigny 1847 fig shell | |
Trophon sp. Montfort 1810 murex snail
Trophon cf. patagonicus Sowerby 1846 murex snail | |
"Proscaphella "sp. 2"" = Miomelon Dall 1907 volute
"Proscaphella "sp. 4"" = Miomelon Dall 1907 volute
Proscaphella cossmanni Ihering 1907 volute | |
"Siphonalia" sp. Adams 1863 true whelk | |
Naticidae indet. Guilding 1834 moon snail | |
Turritella ambulacrum Sowerby 1846 turret shell | |
Epitonium sp. Bolten 1798 wentletrap | |
"Gibbula" dalli Ihering 1897 top snail | |
Peonza cf. torquata Olivera 1994 snail | |
Scaphander sp. Monfort 1810 snail | |
Rhynchonellata | |
Terebratella "sp. 2" d'Orbigny 1847 | |
Thecostraca | |
Balanus sp. Da Costa 1778 barnacle | |
Echinoidea | |
Iheringiella patagonensis Desor 1847 sand dollar |