Where: Argentina (42.1° S, 63.8° W: paleocoordinates 42.2° S, 61.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Puerto Madryn Formation, Late/Upper Miocene (11.6 - 5.3 Ma)
• STRATIGRAPHIC RELATIONS: From the Puerto Madryn Fm, which unconformably overlies the Gaiman Fm (Early Miocene). THICKNESS: From a 2 m thick bed within 22 m thick section. Formation reaches a maximum thickness of 150 m. AGE: Middle Miocene according to del Rio (1992) on the basis of generic affinities with Middle Miocene Caribbean faunas. Regarded as Late Miocene by del Rio (2004). STRATIGRAPHIC POSITION: From near base of section.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, fine-grained, shelly/skeletal, gray sandstone
Size class: macrofossils
Collection methods: COLLECTOR: C. J. del Rio (between 1982 and 1987). REPORSITORY: CPBA; Universidad de Buenos Aires. Ciudad Universitaria, Pabellon II, Buenos Aires, Argentina.
Primary reference: C. J. del Rio. 1992. Middle Miocene bivalves of the Puerto Madryn Formation, Valdes Peninsule, Chubut Province, Argentina (Nuculidae-Pectinidae): Part 1. Palaeontographica Abteilung A 225:1-58 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 71572: authorized by Austin Hendy, entered by Austin Hendy on 29.04.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Anadara (Rasia) lirata" = Anadara (Anadara) lirata
"Anadara (Rasia) lirata" = Anadara (Anadara) lirata Philippi 1887 ark | |
Glycymeris (Glycymeris) longioriformis n. sp. del Rio 1992 clam
Glycymeris (Glycymerita) magna n. sp. del Rio 1992 clam | |
"Lucinisca sp." = Lucina (Lucinisca)
"Lucinisca sp." = Lucina (Lucinisca) Dall 1901 clam | |
Ameghinomya argentina, Ameghinomya meridionalis, Dosinia (Dosinia) meridionalis, Dosinia (Dosinia) cuspidata n. sp.
Ameghinomya argentina Ihering 1897 venus clam
Ameghinomya meridionalis Sowerby 1846 venus clam
Dosinia (Dosinia) meridionalis venus clam
Dosinia (Dosinia) cuspidata n. sp. venus clam | |
"Venericardia ("Cyclocardia") nortensis" = Cyclocardia
"Venericardia ("Cyclocardia") nortensis" = Cyclocardia clam |