page_title: Sundays River Formation
section_title: Geology
hierarchical_section_title: Sundays River Formation / Geology
caption_attribution_description: English: Title: Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum Identifier: annalsofsouthafr10519sout (find matches) Year: 1898 (1890s) Authors: South African Museum Subjects: Natural history Publisher: Cape Town&#160;: The Museum Contributing Library: Smithsonian Libraries Digitizing Sponsor: Biodiversity Heritage Library View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: 212 ANNALS OF THE SOUTH AFRICAN MUSEUM Text Appearing After Image: Fig. 1. Skull of Leptocleidus capensis (Andrews, 1911) in dorsal view. For abbreviations to this and other figures see p. 225. Scale bar = 50 mm. Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
context_page_description: The Sundays River Formation is a geological formation found in the Eastern and Western Cape provinces in South Africa. It is the second youngest of the four formations found within the Uitenhage Group of the Algoa Basin, its type locality, and the only location where outcrops have been located. The Sundays River has been measured at a maximum thickness of 2,000 metres.
context_section_description: The Sundays River Formation overlies the Kirkwood Formation which it grades laterally into in certain areas, meaning that they correlate in age in some localities. The sedimentary rock of the Sundays River comprises mainly fine to medium grained grey sandstones which often contain shell fragments, siltstones, and mudstones. The sandstone layers are frequently cemented with calcite layers. These were deposited in a shallow marine environment which likely included estuarine and lagoonal settings.
caption: Skull of Leptocleidus capensis (Andrews, 1911) from the Sundays River Formation
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