scholarly journals Eocene bryozoan assemblages from the La Meseta Formation of Seymour Island, Antarctica

2018 ◽  
Author(s):  
Urszula HARA ◽  
Thomas MÖRS ◽  
Jonas HAGSTRÖM ◽  
Marcelo A. REGUERO
Keyword(s):  
La Meseta Formation ◽  
Seymour Island

scholarly journals GLOTTIDIA (BRACHIOPODA: LINGULIDAE) FROM THE EOCENE LA MESETA FORMATION, SEYMOUR ISLAND, ANTARCTICA

Palaeontology ◽  
2005 ◽  
Vol 48 (2) ◽  
pp. 423-431 ◽  
Author(s):  
CHRISTIAN C. EMIG ◽  
MARIA ALEKSANDRA BITNER
Keyword(s):  
La Meseta Formation ◽  
Seymour Island

Remarkably preserved annelid worms from the La Meseta Formation (Eocene), Seymour Island, Antarctica

Palaeontology ◽  
2005 ◽  
Vol 48 (1) ◽  
pp. 1-13 ◽  
Author(s):  
CARRIE E. SCHWEITZER ◽  
RODNEY M. FELDMANN ◽  
SERGIO MARENSSI ◽  
DAVID A. WAUGH
Keyword(s):  
La Meseta Formation ◽  
Seymour Island

The youngest record of fossil land mammals from Antarctica; its significance on the evolution of the terrestrial environment of the Antarctic Peninsula during the late Eocene

1997 ◽  
Vol 71 (2) ◽  
pp. 348-350 ◽  
Author(s):  
S. F. Vizcaino ◽  
M. Bond ◽  
M. A. Reguero ◽  
R. Pascual
Keyword(s):  
Antarctic Peninsula ◽  
Present Note ◽  
Late Eocene ◽  
South American ◽  
Terrestrial Environment ◽  
Shallow Marine ◽  
Early Oligocene ◽  
La Meseta Formation ◽  
The Antarctic ◽  
Seymour Island

The record of fossil land mammals from Antarctica has been restricted previously to the middle levels of the Eocene-?early Oligocene La Meseta Formation in Seymour Island, Antarctic Peninsula. This mostly shallow-marine sequence was divided informally into seven subunits (Tertiary Eocene La Meseta or TELM 1 to 7) by Sadler (1988). Land mammals, representing South American lineages of marsupials, edentates, and ungulates were recovered from TELM 3, 4, and 5 (Marenssi et al., 1994; Vizcaíno et al., 1994). The purpose of the present note is to report the discovery of a well-preserved ungulate tooth from the uppermost level of the La Meseta Formation (TELM 7) and to discuss its paleoenvironmental implications.

An Eocene wrasse (Perciformes; Labridae) from Seymour Island

1992 ◽  
Vol 4 (2) ◽  
pp. 235-237 ◽  
Author(s):  
Douglas J. Long
Keyword(s):  
Climatic Change ◽  
Trophic Structure ◽  
Late Eocene ◽  
Pharyngeal Tooth ◽  
Tooth Plate ◽  
Antarctic Waters ◽  
La Meseta Formation ◽  
First Occurrence ◽  
Wide Scale ◽  
Seymour Island

A nearly complete lower pharyngeal tooth-plate from a large (over 60 cm long) fossil wrasse (Perciformes: Labridae) was recently recovered from the middle to late Eocene La Meseta Formation on Seymour Island, Antarctic Peninsula. This find increases the number of teleosts from the Eocene of Antarctica to five taxa, and further illustrates the diversity of the ichthyofauna in the Eocene Weddellian Sea prior to wide-scale climatic change in the Southern Ocean. The fossil wrasse represents the first occurrence of this family in Antarctica, and is one of the oldest fossils of this family from the Southern Hemisphere. Wrasses are not found in Antarctic waters today, and probably became extinct during the Oligocene due to a combination of climatic change, loss of shallow-water habitat, and changes in the trophic structure of the Wedell Sea.

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