Table 1.
Stratigraphic occurrences, facies distribution, and climatic conditions of Eocene La Meseta chondrichthyan associations of Seymour Island (Antarctica) based on published records (see text for references).
| TELM | Facies | Temp. | Association |
|---|---|---|---|
| 7 | Shallow marine Inner estuary channels | ca. 7–8° C ca. 5° C | Squalus sp., Squatina sp., Pristiophorus laevis, Carcharocles sokolovi, Palaeohypotodus cf. rutoti, Striatolamia cf. macrota, Ischyodus dolloi |
| 6 | Estuary | ca. 7° C ca. 15° C | Coelometlaouia pannucea, Pristiophorus laevis, Mustelus sp., Meridiogaleus cristatus, gen. et sp. nov., Notoramphoscyllium woodwardi, Kallodentis rhytistemma, gen. et sp. nov., Ischyodus dolloi |
| 5 | Estuary | ca. 10–11° C | Heptranchias howelli, Hexanchus sp., Centrophorus sp., Dalatias licha, Squalus weltoni, Squalus woodburnei, Pristiophorus laevis, Squatina sp., Anomotodon multidenticulata, Cetorhinus sp., Macrorhizodus praecursor, Lamna cf. nasus, Odontaspis winkleri, Palaeohypotodus rutoti, Striatolamia macrota, Mustelus sp., Meridiogaleus cristatus, gen. et sp. nov., Kallodentis rhytistemma, gen. et sp. nov., Galeorhinus sp., Abdounia richteri, sp. nov., Abdounia mesetae, sp. nov., Myliobatis sp., Raja/Bathyraja sp., Ischyodus dolloi |
| 4 | Estuary | ca. 10–11° C | Paraorthacodus sp., Heptranchias howelli, Hexanchus sp., Centrophorus sp., Dalatias licha, Deania sp., Squalus weltoni, Squalus woodburnei, Pristiophorus laevis, Squatina sp., Anomotodon multidenticulata, Carcharocles auriculatus, Cetorhinus sp., Macrorhizodus praecursor, Lamna cf. nasus, Odontaspis winkleri, Palaeohypotodus rutoti, Striatolamia macrota, Carcharhinus sp., Myliobatis sp., Pristis sp., Raja/Bathyraja sp., Chimaera seymourensis, Ischyodus dolloi |
| 3 | Delta plain to estuary | ca. 10–11° C ca.15° C | Pristiophorus laevis, Carcharocles auriculatus, Lamna cf. nasus, Striatolamia macrota, Myliobatis sp., Ischyodus dolloi |
| 2 | Delta front | Callorhinchus stahli, Chimaera seymourensis, Ischyodus dolloi | |
| 1–2 | Prodelta? /Inner estuarine? | Centrophorus sp., Deania sp., Carcharocles auriculatus, Striatolamia macrota |
Taxa described here are in bold. Facies interpretation according to Marenssi et al. (2002); sea surface temperatures (Temp.) according to Ivany et al. (2008). For occurrence references, see text.