Itombe Formation

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Itombe Formation
Stratigraphic range: Coniacian
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Type Geological formation
Sub-unitsTadi Beds
Underlies N'Golome Marl
Overlies Cabo Ledo & Massangano Formations
Thicknessup to 600 m (2,000 ft)
Lithology
Primary Shale
Other Limestone, siltstone, sandstone
Location
Coordinates 8°12′S13°12′E / 8.2°S 13.2°E / -8.2; 13.2
Approximate paleocoordinates 23°00′S1°24′E / 23.0°S 1.4°E / -23.0; 1.4
Region Bengo
CountryAngola
Extent Kwanza Basin
Angola relief location map.jpg
Lightgreen pog.svg
Itombe Formation (Angola)

The Itombe Formation is a geological formation of the Kwanza Basin in Angola dated to the Coniacian stage of the Late Cretaceous. The environment of deposition is shallow marine. Reptile fossils have been recovered from the Tadi beds locality within the formation, including the dinosaur Angolatitan , [1] the mosasaurs Angolasaurus and Mosasaurus iembeensis and the turtle Angolachelys . [2] The Itombe formation was formerly considered Turonian in age, but new data suggests to be Coniacian. [3]

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References

  1. Mateus, Octávio; Jacobs, Louis L.; Schulp, Anne S.; Polcyn, Michael J.; Tavares, Tatiana S.; Buta Neto, André; Morais, Maria Luísa; Antunes, Miguel T. (March 2011). "Angolatitan adamastor, a new sauropod dinosaur and the first record from Angola". Anais da Academia Brasileira de Ciências. 83 (1): 221–233. doi: 10.1590/S0001-37652011000100012 . ISSN   0001-3765. PMID   21437383.
  2. Mateus, Octávio; Jacobs, Louis; Polcyn, Michael; Schulp, Anne S.; Vineyard, Diana; Buta Neto, André; Telles Antunes, Miguel (December 2009). "The Oldest African Eucryptodiran Turtle from the Cretaceous of Angola". Acta Palaeontologica Polonica . 54 (4): 581–588. doi: 10.4202/app.2008.0063 . ISSN   0567-7920.
  3. Mateus, Octávio; Callapez, Pedro M.; Polcyn, Michael J.; Schulp, Anne S.; Gonçalves, António Olímpio; Jacobs, Louis L. (2019). "The Fossil Record of Biodiversity in Angola Through Time: A Paleontological Perspective". Biodiversity of Angola. Springer International Publishing. pp. 53–76. doi:10.1007/978-3-030-03083-4_4. ISBN   978-3-030-03082-7. S2CID   133717540.

Further reading