Lif-Mahuida Quarry (Miocene of Argentina)

Also known as Ingeniero Jacobacci

Where: Río Negro, Argentina (41.3° S, 69.6° W: paleocoordinates 41.8° S, 65.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: La Pava Member (Collón Curá Formation), Langhian (16.0 - 13.8 Ma)

• "Edad Friasense"

•Lopez et al., 2019 consider La Pava as a separate formation, underlying the Collon-Cura fm. It has a max? 16Ma age.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified diatomite

• "capas diatomíticas"

Size class: macrofossils

Preservation: mold/impression

Reposited in the MLP

• Museo de La Plata collection

Primary reference: A. M. Baez and S. Peri. 1990. Revision de Wawelia gerholdi, un anuro del Mioceno de Patagonia. Ameghiniana 27(3-4):379-386 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92113: authorized by John Alroy, entered by John Alroy on 01.11.2009, edited by Miranta Kouvari

Creative Commons license: CC BY (attribution)

Taxonomic list

• undescribed mammals, fishes, invertebrates, and plants also are present; the mammals at least are from tuffs concordantly underlying the diatomite
Amphibia
 Salientia - Ceratophryidae
Wawelia gerholdi n. gen. n. sp.
Wawelia gerholdi n. gen. n. sp. Casamiquela 1963 frog
Mammalia
 Rodentia - Dasyproctidae
Alloiomys sp. Vucetich 1977 caviomorph
Alloiomys? sp. MLP 76-VIII-30-4
 Rodentia -
Eocardia robusta Vucetich 1984 caviomorph
MJHG 76-III-1-1