OSTRÁCODOS MARINOS DEL PALEÓGENO DEL SUD-SUDESTE DEL LAGO CARDIEL, SANTA CRUZ, ARGENTINA

Authors

  • Alicia E. Echevarría Servicio Geológico Minero Argentino, Buenos Aires.

Abstract

Twenty-two genera and thirty-eight species of Palaeogene marine ostracods from the San Miguel profile and West Estancia San Miguel and (Eocene?) West Estancia San Miguel samples of Centinela Formation, from the southeastern region of Lake Cardiel, Santa Cruz Province (49° 15' S, 71° 05' W), were studied. They are not well preserved. Nineteen taxa were described previously. Nine species are provisionally classified. Wichmannella deliae Bertels and Australicythere sp. 1 are the dominant species. The microfauna seems to have inhabited a shallow sea having a warm-temperate palaeotemperature, relatively rapid sedimentation, moderately high energy level and high oxygen level. Magnesium would be the most abundant cation. The ostracods of the San Miguel profile and West Estancia San Miguel sample are assigned to the Oligocene according to geological and foraminiferal data.

KEY WORDS. Ostracoda. Systematics. Palaeoecology. Paleogene. Santa Cruz. Argentina.

Downloads

Published

2015-10-01

Issue

Vol. 5 No. 1 (1998)

Section

Thematic Volume

License

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a CC Attribution-NonCommercial 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.