Minas de Petroleo (Wieland coll) (Triassic of Argentina)

Where: Mendoza, Argentina (33.1° S, 69.1° W: paleocoordinates 49.8° S, 34.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Upper Member (Potrerillos Formation), Carnian (237.0 - 228.0 Ma)

• Fossil insects in the second unit, 10m from the bottom, the unit is 50m thick

Environment/lithology: lacustrine delta plain; lithified, sandy, carbonaceous shale and sandy, conglomeratic claystone

• The Cuyo Basin may be characterised as a passive rift basin produced as a result of generalised extension induced by crustal thinning and collapse of the Upper Palaeozoic (Gondwana) orogen (Llambías and Sato, 1990, 1995; Spalletti, 1999). It can be defined as a half graben that shows strong asymmetric structural and depositional features, as well as intrabasinal highs or transference zones that delimit different depocentres (Kokogián et al., 1988, 1993; Ramos and Kay, 1991; López Gamundí, 1994; Spalletti, 1999, 2001).
• Arenaceous to carbonaceous shales, or fine clays, often markedly to finely laminated, with frequent plants in much greater variety than in either of the higher horizons.

Size class: macrofossils

Preservation: mold/impression

Collected by G.R. Wieland in 1917; reposited in the YPM

Primary reference: G. R. Wieland. 1925. Rhaetic crane flies from South America. American Journal of Science, Series 5 9:21-28 [D. Smith/E. Leckey/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84244: authorized by Dena Smith, entered by Erin Leckey on 30.09.2008, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Hemiptera - Scytinopteridae
Tipuloidea rhaetica n. gen. n. sp.
Tipuloidea rhaetica n. gen. n. sp. Wieland 1925 true bug
YPM IP 034956
 Mecoptera - Mesopsychidae
Tipulidites affinis n. gen. n. sp.
Tipulidites affinis n. gen. n. sp. Wieland 1925 scorpionfly
YPM IP 034957
Cycadeoideopsida
 Cycadeoideales -
Yabeiella sp., Yabeiella wielandi, Yabeiella crassa, Yabeiella mareyesiaca, Yabeiella spatulata, Yabeiella brackebushiana
Yabeiella sp. Oishi 1931
YPM PC 1017, 1024, 1025
Yabeiella wielandi Oishi 1931
YPM PC (?)1008, 1026-8, 1030
Yabeiella crassa Jones and de Jersey 1947
YPM PC 1011, 1013a, b, 1016
Yabeiella mareyesiaca Geinitz 1876
YPM PC 1010, 1012, 1014-5
Yabeiella spatulata Oishi 1931
YPM PC 1018-23, 1031, 1062
Yabeiella brackebushiana Kurtz 1921
YPM PC 1007, 1009, 1029
Peltaspermopsida
 Peltaspermales - Peltaspermaceae
"Thinnfeldia praecordillarae" = Pachydermophyllum praecordillerae
"Thinnfeldia praecordillarae" = Pachydermophyllum praecordillerae Frenguelli 1944
YPM PC 1044, 1052
Gymnospermopsida
 Corystospermales - Corystospermaceae
Xylopteris rigida, Fanerotheca extans, "Dicroidium feistmanteli" = Dicroidium feistmantelii, Dicroidium odontopteroides, "Dicroidium coriacium" = Dicroidium coriaceum, Pteruchus rhaetica, Feruglioa samaroides
Xylopteris rigida Dun 1909
YPM PC 1063, 1070-3, 1075-9, 1102
Fanerotheca extans Frenguelli 1944
YPM PC 1099
"Dicroidium feistmanteli" = Dicroidium feistmantelii Johnston 1847
YPM PC 1045, 1049-50, 1119
Dicroidium odontopteroides Morris 1845
YPM PC 1047-8, 1051, 1088
"Dicroidium coriacium" = Dicroidium coriaceum Johnston 1886
YPM PC 1988-93
Pteruchus rhaetica Geinitz 1876
YPM PC 1136
Feruglioa samaroides Frenguelli 1944
YPM PC 1064, 1105
Cycadopsida
 Pteridospermales -
Thinnfeldia dutoiti n. sp.
Thinnfeldia dutoiti n. sp. Jain and Delevoryas 1967 cycads
YPM PC 1046 (holotype)
Ginkgoopsida
 Caytoniales - Caytoniaceae
Sagenopteris longicaulis
Sagenopteris longicaulis Du Toit 1927
YPM PC 1137a-d
 Ginkgoales - Ginkgoaceae
Baiera rollerii, Baiera cuyana, Stachyopitys anthoides, Baierophyllites florinii n. gen. n. sp.
Baiera rollerii Frenguelli 1946
YPM PC 1122
Baiera cuyana Frenguelli 1942
YPM PC 1121
Stachyopitys anthoides Frenguelli 1944
YPM PC 1100
Baierophyllites florinii n. gen. n. sp. Jain and Delevoryas 1967
YPM PC 1083-4, 1086, 1120 (holotype)
 Ginkgoales -
Sphenobaiera tenuifolia, Sphenobaiera argentinae
Sphenobaiera tenuifolia Johnston 1887
YPM PC 1080-2, 1074, 1103
Sphenobaiera argentinae Kurtz 1894
YPM PC 1065
 Czekanowskiales -
Phoenicopsis elongatus
Phoenicopsis elongatus Morris 1845
YPM PC 1068 1131-2
Cordaitopsida
  - Cordaitaceae
Noeggerathiopsis sp.
Noeggerathiopsis sp. Feistmantel 1879
YPM PC 1098
 Coniferales -
Fraxinopsis major, Fraxinopsis minor
Fraxinopsis major Wieland 1929
YPM PC 1033, 1042-3, 1061, 1069
Fraxinopsis minor Wieland 1929
YPM PC 1032, 1034-41, 1123-7
 Coniferales - Podocarpaceae
Podozamites lanceolatus
Podozamites lanceolatus Lindley and Hutton 1840 podocarp
var. genuinus; YPM PC 1066-7, 1087, 1133
Hepaticae
  -
Thallites sp.
Thallites sp. Walton 1925 liverwort
YPM PC 1104a, b
Polypodiopsida
  -
Cladophlebis australis, Cladophlebis sp., Cladophlebis mesozoica, Cladophlebis kurtzi, Cladophlebis wielandi n. sp., Cladophlebis johnstoni
Cladophlebis australis
YPM PC 1053, 1055, 1056, (?)1117
Cladophlebis sp. Brongniart 1849
YPM PC 1112, 1113
Cladophlebis mesozoica Kurtz 1947
YPM PC 1059, 1060, 1118
Cladophlebis kurtzi Frenguelli 1947
YPM PC 1059, 1060, 1116
Cladophlebis wielandi n. sp. Jain and Delevoryas 1967
YPM PC 1054 (holotype)
Cladophlebis johnstoni Walkom 1925
YPM PC 1057, 1111
 Equisetales - Equisetidae
Equisetites fertilis, Neocalamites carreri
Equisetites fertilis
YPM PC 1104, 1107-9
Neocalamites carreri
YPM PC 1095-7, 1106