Where: Venezuela (8.6° N, 71.2° W: paleocoordinates 56.4° S, 69.1° W)
• coordinate based on political unit
• basin-level geographic resolution
When: El Horno Formation, Ludlow (427.4 - 423.0 Ma)
• Ludlow age based on presence of Amphistrophia cf. funiculata, "Brachyprion" cf. attenuata, Shagamella ludloviensis, and Coelospira cf. saffordi (Boucot et al. 1972--PBDB ref. 7026). This was originally part of the Caparo Formation, but that is now restricted to the Sandbian.
• formation-level stratigraphic resolution
Environment/lithology: marine; gray mudstone
Size class: macrofossils
Collection methods: Table 5 of Boucot et al. 1973 (PBDB ref. 7026).
Primary reference: A. J. Boucot, J. L. Benedetto, Y. Grahn, J. H. G. Melo, T. M. Sanchez and B. A. Waisfeld. 1999. South American marine Silurian communities. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 841-848 [M. Foote/M. Foote/M. Foote]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 25067: authorized by Michael Foote, entered by Michael Foote on 27.08.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
"? Chilidiopsis sp." = Fardenia (Coolinia)
"? Chilidiopsis sp." = Fardenia (Coolinia) Bancroft 1949 | |
? Protochonetes sp. Muir-Wood 1962 | |
| |
Amphistrophia sp., "Amphistrophia cf. funiculata" = Amphistrophiella funiculata
"Amphistrophia cf. funiculata" = Amphistrophiella funiculata M'Coy 1846 | |
Leptaena cf. delicata Amsden 1949 | |
Strophonella sp., "Strophonella cf. haueri" = Strophonella (Quasistrophonella) haueri
Strophonella sp. Hall 1879
"Strophonella cf. haueri" = Strophonella (Quasistrophonella) haueri Barrande 1848 | |
Shaleria sp. Caster 1939 | |
Rhynchonellata | |
Stegerhynchus aff. praecursor Foerste 1909 | |
? Ancillotoechia sp. Havlicek 1959 | |
| |
Ptychopleurella sp. Schuchert and Cooper 1931
Dolerorthis sp. Schuchert and Cooper 1931 | |
Dalejina sp. Havlicek 1953 | |
Dicoelosia sp. King 1850 | |
Isorthis cf. arcuaria Hall and Clarke 1892
Resserella sp. Bancroft 1928 | |
Skenidioides sp. Schuchert and Cooper 1931 | |
? Anastrophia sp. Hall 1867 | |
Gypidula sp. Hall 1867 | |
Howellella sp. Kozlowski 1946 | |
| |
Nucleospira sp. Hall 1859 | |
Merista sp. Suess 1851 | |
Meristina sp. Hall 1867 | |
| |