Corumbella and in situ Cloudina in association with thrombolites in the Ediacaran Itapucumi Group, Paraguay

Author(s)

Warren, Lucas V. ^[1] ; Fairchild, Thomas R. ^[1] ; Gaucher, Claudio ^[2] ; Boggiani, Paulo C. ^[1] ; Poire, Daniel G. ^[3] ; Anelli, Luis E. ^[1] ; Inchausti, Julio C. G. ^[4]

Affiliation

^[1] Univ Sao Paulo, Inst Geociencias, BR-05508080 Sao Paulo - Brazil

^[2] Fac Ciencias, Dept Geol, Montevideo 11400 - Uruguay

^[3] UNLP CONICET, Ctr Invest Geol, RA-1900 La Plata - Argentina

^[4] Minist Obras Publ & Comun, Assuncion 1221 - Paraguay

• Document type: Journal article
• Source: TERRA NOVA; v. 23, n. 6, p. 382-389, DEC 2011.
• Web of Science Citations: 44

Abstract

An in situ assemblage of Cloudina, thrombolites and an ichnofossil (cf. Archaeonassa), together with fragments of Corumbella werneri, is reported here, from a tidally influenced, shallow, lagoonal setting on a carbonate ramp within the Itapucumi Group, Paraguay. The association of Cloudina with thrombolites is comparable to other terminal Neoproterozoic occurrences, but the coexistence of shelly fossils in situ with trace fossils and microbially induced sedimentary structures is apparently unique. This discovery extends the record of Cloudina and Corumbella in South America and further elucidates the diversity, distribution and palaeoecology of shelled organisms in late Ediacaran time. (AU)

• FAPESP's process: 10/02677-0 - Stable isotope records (C, O and Sr) of the Itapucumi Group and correlation with Corumbá Group (Ediacaran Period)
• Grantee: Paulo César Boggiani
• Support Opportunities: Regular Research Grants
• FAPESP's process: 10/19584-4 - Tectonics and sedimentation of Itapucumi group in the context of Ediacaran carbonatic platforms: a geochemical, geochronological, paleomagnetic and biostratigraphic approach
• Grantee: Lucas Verissimo Warren
• Support Opportunities: Scholarships in Brazil - Post-Doctoral