Duke Locality 22 (Miocene of Colombia)

Where: Colombia (3.3° N, 75.2° W: paleocoordinates 2.7° N, 72.6° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Baraya Member (Villavieja Formation), Laventan (13.8 - 11.0 Ma)

• Note: This collection had a Friasian age but this must be the Friasian sensu lato, that includes the Friasian sensu stricto, Mayoan and Laventan. The lower Villavieja formation (Baraya member) is considered of Laventan age now and the upper Villavieja formation is considered Laventan-Mayoan in age (Flynn et al., 1997).

•The Honda Group is constrained by radiometric and paleomagnetic evidence to between approximately 13.5 Ma–11.8 Ma (Flynn et al., 1996; Guerrero, 1996; Madden et al., 1996).

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; gray, green mudstone and gray, green sandstone

• "14.8 m of extremely fossiliferous greenish-gray mudstone and sandstone....fining upward sequence is 1-m-thick medium-grained sandstone followed by 4.5 m of reddish-brown sandy mudstone, 1.2 m of pale-green mudstone, and on top, 0.8 m of reddish-brown mudstone"

Size class: macrofossils

Primary reference: A. A. Carlini, S. F. Vizcaino, and G. J. Scillato-Yane. 1997. Armored Xenarthrans: A unique taxonomic and ecologic assemblage. Vertebrate Paleontology in the Neotropics; The Miocene Fauna of La Venta, Colombia (R. F. Kay, R. H. Madden, R. L. Cifelli, and J. J. Flynn, eds.; Smithsonian Institution Press, Washington) [J. Alroy/J. Wertheim/L. Mora-Rojas]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13749: authorized by John Alroy, entered by Jill Wertheim on 23.04.2002, edited by Roger Benson, Maria Vallejo, Philip Mannion and Laura Mora-Rojas

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Sparassodonta - Hondadelphidae
Hondadelphys fieldsi3 Marshall 1976 metatherian
IGM 250833
 Microbiotheria - Microbiotheriidae
Pachybiotherium minor3 Goin 1997 marsupial
Specimen nº IGM 253026; IGM 253027; IGM 253028; IGM 253029
 Didelphimorphia - Didelphidae
Marmosini indet.3 Reig et al. 1987 opossum
IGM 250328, IGM 253041, IGM 253040, IGM 253046
Thylamys colombianus3 Goin 1997 fat-tailed mouse opossum
IGM 253031; IGM 253033; IGM 253034
Thylamys minutus3 Goin 1997 fat-tailed mouse opossum
IGM 253042
Micoureus laventicus3 Marshall 1976 woolly mouse opossum
IGM 253035
 Chiroptera - Molossidae
Molossidae indet.2 Gervais 1856 free-tailed bat
Specimen n° IGM 250329, 252969, 252987, 252988, 252989, IGM-DU 90-235
 Chiroptera - Noctilionidae
Noctilio albiventris1 Desmarest 1818 bulldog bat
IGM 253005, IGM 252961, IGM 253006, IGM 252965, IGM 252964, IGM 252967, IGM 252968, IGM 252960, IGM 252962, IGM 252963. The Specimens n° IGM 252975 and IGM 252976 are reported by Czaplewski et al. 2003 (PBDB Ref. n° 47088)
 Chiroptera - Thyropteridae
cf. Thyroptera tricolor1 disk-winged bat
IGM 250327
Thyroptera lavali2 Pine 1993 disk-winged bat
IGM 252978, IGM 252979, IGM 252970, IGM 252985, IGM-DU SN-0221a, IGM-DU SN-0221b
Thyroptera robusta n. sp.1 Czaplewski 1997 disk-winged bat
IGM 252868, IGM 252876, IGM 252877, IGM 252878
 Chiroptera - Phyllostomidae
Phyllostominae indet.1 Gray 1825 leaf-nosed bat
IGM 252869 This specimen was reclassified by Czaplewski et al. 2003 (PBDB Ref. n° 47088) as Notnycteris sucharadeus (see below)
Tonatia sp.2 Gray 1827 leaf-nosed bat
Specimen n° 252980, 252981, 252982, 252983
Notonycteris magdalenensis1 Savage 1951 leaf-nosed bat
IGM 252865, IGM 251047. The specimens n° IGM 252972, IGM 252973 are reported by Czaplewski et al. 2003 (PBDB Ref. n° 47088)
Notonycteris sucharadeus2 Czaplewski et al. 2003 leaf-nosed bat
IGM 252869
Glossophaginae indet.1 Bonaparte 1845 leaf-nosed bat
IGM 252863 This specimen was reclassified by Czaplewski et al. 2003 (PBDB Ref. n° 47088) as Palynellophyllum antimaster (see below)
Palynephyllum antimaster2 Czaplewski et al. 2003 leaf-nosed bat
IGM 252863, IGM 252971
 Chiroptera - Emballonuridae
Emballonuridae indet.2 Dobson 1875 sac-winged bat
IGM 252993
Diclidurus indet.1 Wied-Neuwied 1819 ghost bat
IGM 251048
 Cingulata - Pachyarmatheriidae
Neoglyptatelus originalis Carlini et al. 1997 edentate
Reptilia
 Squamata - Boidae
Eunectes sp.4 Wagler 1830 anaconda
Specimen n° IGM 182840
 Squamata - Teiidae
"Paradracaena colombiana" = Dracaena colombiana6
"Paradracaena colombiana" = Dracaena colombiana6 Estes 1961 caiman lizard
IGM 184146 (partial right dentary)
 Crocodylia - Alligatoridae
Mourasuchus atopus5 Langston 1965 crocodilian
IGM 250860 (right maxilla and part of a left mandible)