Where: Argentina (30.3° S, 68.8° W: paleocoordinates 57.2° S, 118.3° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Los Espejos Formation, Pridoli to Pridoli (423.0 - 393.3 Ma)
• Upper part of formation. Authors interpret age as Pridolian. Edgecombe et al. (1994, PBDB ref. 7141 think it is Lower Lochkovian on the basis of trilobites and presence of Pleurodictyum and typical Lower Lochkovian chitinozoans in immediately overlying beds.
• member-level stratigraphic resolution
Environment/lithology: marine; bioturbated, green, yellow mudstone and sandstone
Collection methods: Coquinas 13, 15, 16, 32 in Table 2, and list of taxa in tables 3 and 4. One additional trilobite from PBDB ref. 7141.
Primary reference: T. M. Sanchez, B. G. Waisfeld, and J. L. Benedetto. 1991. Lithofacies, taphonomy, and brachiopod assemblages in the Silurian of western Argentina: A review of Malvinokaffric Realm communities. Journal of South American Earth Sciences 4(4):307-329 [M. Foote/M. Foote/O. Alfaro]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 25055: authorized by Michael Foote, entered by Michael Foote on 27.08.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Anthozoa | |
| |
Pleurodictyum sp. Goldfuss 1829 tabulate coral | |
Graptolithina | |
Graptolithina indet. graptolite | |
Crinoidea | |
Crinoidea indet. Miller 1821 Sea lily | |
Tentaculitida indet. Ljaschenko 1955 | |
Hyolitha | |
Hyolithida indet. Mathew 1962 | |
Rhynchonellata | |
Salopina sp. Boucot 1960 | |
"Harringtonina acutiplicata" = Anabaia
"Harringtonina acutiplicata" = Anabaia | |
Strophomenata | |
Plectodonta (Plectodonta) minima Benedetto et al. 1992 | |
Leptaena argentina Thomas 1905 | |
Lingulata | |
Lingulidae indet. Gray 1840 | |
Bivalvia | |
Taxodonta indet. clam | |
Actinopteria modesta oyster | |
Modiomorphidae indet. Miller 1877 clam | |
Anthracoleda (Pseudoleda) minuta Sanchez et al. 1995 pointed nut clam | |
? Palaeoneilo sp. Hall and Whitfield 1869 clam | |
Nuculites argentinum clam | |
Cephalopoda | |
Nautiloidea indet. Agassiz 1847 nautiloid | |
Gastropoda | |
"Bellerophontacea indet." = Bellerophontoidea
"Bellerophontacea indet." = Bellerophontoidea M'Coy 1851 snail | |
Platyostoma sp. Conrad 1842 snail | |
Loxonema sp. Phillips 1841 snail | |
Deuteropoda | |
Ostracoda indet. Latreille 1802 ostracod | |
Trilobita | |
Leonaspis sp. Richter and Richter 1917 trilobite | |
Phacops argentinus trilobite | |
Andinacaste espejensis n. sp.
Andinacaste espejensis n. sp. trilobite | |
? Synphoriinae indet. Delo 1935 trilobite
Dalmanites cf. sudamericanus trilobite | |
Calymene vallecitoensis trilobite | |
Trimerus kayseri trilobite |