Bajo de Veliz (CORD collection) (Carboniferous to of Argentina)

Where: San Luis, Argentina (32.3° S, 65.5° W: paleocoordinates 49.1° S, 59.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Pallero Member (Bajo de Veliz Formation), Kasimovian to Kasimovian (307.0 - 298.9 Ma)

• The fossil plants include species of the Gangamopteris biozone and their content corresponds to the Lubeckense flora that corresponds to the Carboniferous–Permian boundary. The palynoflora suggested different age such as Permian (Sakmarian; Menéndez 1971) or earliest Permian (Gutiérrez & Césari 2000). Radiometric dating of other correlated units (e.g. La Colina, La Rioja Province) brings a middle Stephanian age (295 ± 6 Ma, Late Carboniferous; Archangelsky et al. 1995). Correlated with the Patquia Formation, which is as old as mid-Moscovian at its base.

Environment/lithology: "floodplain"; gray, silty siltstone

• Paganzo basin; fault-controlled subsidence formed small half-grabens and pull-apart basins that subsided intermittently in a series of rapid spurts. Strongly resemble transtensional pull-apart basins of strike-slip zones.

Size class: macrofossils

Preservation: mold/impression

Collected by M. Hunicken, I. D. Pinto

Collection methods: quarrying,

Primary reference: I. D. Pinto and L. P. de Ornellas. 1978. Upper Carboniferous Insects from Argentina. I-Família Diaphanopteridae (Megasecopteroidea). Pesquisas 10:87-95 [M. Clapham/J. Karr/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35057: authorized by Dena Smith, entered by April Kinchloe on 28.10.2003, edited by Jered Karr and Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Cnemidolestodea - Cnemidolestidae
"Paranarkemina amosi n. sp." = Argentinonarkemina amosi2, "Paranarkemina kurtzi n. gen. n. sp." = Paranarkemina kurtzi6, "Paranarkemina velizensis n. sp." = Paranarkemina kurtzi7
"Paranarkemina amosi n. sp." = Argentinonarkemina amosi2 Pinto 1992 winged insect
CORD-PZ-2106
"Paranarkemina kurtzi n. gen. n. sp." = Paranarkemina kurtzi6 Pinto and De Ornellas 1980 winged insect
CORD-PZ-2099
"Paranarkemina velizensis n. sp." = Paranarkemina kurtzi7 Pinto and De Ornellas 1980 winged insect
CORD-PZ-81; collected by F. Kurtz, 1894-1895
 Protorthoptera - Rigattopteridae
Rigattoptera ornellasae n. gen. n. sp.4
Rigattoptera ornellasae n. gen. n. sp.4 Pinto 1996 winged insect
CORD-PZ-2101
 Dicondylia -
? Megasecoptera indet.7 Brongniart 1885 winged insect
 Megasecoptera - Sphecorydaloididae
Sphecorydaloides lucchesei n. gen. n. sp.3 Pinto 1994 winged insect
CORD-PZ-3205
 Diaphanopterodea - Diaphanopteridae
Philiasptilon huenickeni n. sp. Pinto and de Ornellas 1978 winged insect
CORD-PZ 2100
Diaphpterum rasnitsyni n. gen. n. sp.8 Pinto 1999 winged insect
CORD-PZ-3202a , 3202b
 Diaphanopterodea - Velisopteridae
Velisoptera taschi n. gen. n. sp.5
Velisoptera taschi n. gen. n. sp.5 Pinto and Adami-Rodrigues 1997 winged insect
CORD-PZ-2098, 2102, 2103, 3201
Xiphosura
 Xiphosurida - Woodwardopteridae
Megarachne servinei n. gen. n. sp.1
Megarachne servinei n. gen. n. sp.1 Hunicken 1980 eurypterid