Also known as "Elizabethfeldern" (Savage, 1965), Sperrgebiet, E-Feld, Tortoise Site
Where: Karas, Namibia (27.0° S, 15.3° E: paleocoordinates 27.9° S, 12.8° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Elisabeth Bay Formation, Early/Lower Miocene (23.0 - 16.0 Ma)
• The fossiliferous beds were assigned to the Elisabeth Bay Formation by Greenman (1966, unpubl. MSc thesis) but this unit, as originally defined, is penetrated by a major unconformity comprising a hiatus of about 15 Ma (Pickford & Senut, 1999, p. 61 & 76). The name Elisabeth Bay Formation here refers only to the lower, fluvial part of the series which is of Lower Miocene age (Pickford & Senut, 1999, p. 76).
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; red siltstone and green, yellow sandstone
Size classes: macrofossils, mesofossils
Collected by E. Stromer, M. Pickford, B. Senut in the 1920s, 1990s, 2000s
• The squamate material listed by Rage (2008) was collected by Martin Pickford and Brigitte Senut in the course of the Namibia Paleontology Expedition (NPE) in the 1990s and 2000s and is reposited in the Geological Survey of Namibia in Windhoek.
Primary reference: J.-C. Rage. 2008. Squamate reptiles from the Lower Miocene of the Sperrgebiet, Namibia. In M. Pickford and B. Senut (eds.), Geology and palaeobiology of the northern Sperrgebiet, Namibia. Memoir of the Geological Survey of Namibia (Ministry of Mines and Energy, Windhoek) 20:93-103 [J. Mueller/T. Liebrecht]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 146601: authorized by Mark Uhen, entered by Mark Uhen on 28.06.2013, edited by Torsten Liebrecht, Richard Butler, Evangelos Vlachos, Patricia Holroyd and Grace Varnham
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
"? Testudo namaquensis n. sp." = Namibchersus namaquensis6
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"Colubrinae" indet. Oppel 1811 colubrid snake 13 trunk vertebrae (EF 237’01b and EF 20’05d), 3 larger trunk vertebrae (EF 20’05e), and perhaps 7 partly articulated trunk vertebrae in matrix (EF 21’97)
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Colubroidea indet. Oppel 1811 snake 2 incomplete trunk vertebrae (EF 71’94a and EF 20’05f), and perhaps 5 articulated vertebrae embedded in matrix (EF 16’94) and two incomplete vertebrae (EF 71’94b and EF 13’97)
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Boidae indet. Gray 1825 boa 1 tooth (EF 237’01a), 1 vertebra (EF 108’01), 7 vertebrae of a single juvenile individual (EF 20’05c)
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| Mammalia | |
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Viverridae "gen. et sp. indet. II"3 Gray 1821 civet EF 8’94, a fragment of right mandible with c/1-p/4 in a poor state of preservation, and EF 9’94, associated left calcaneum and astragalus
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Hyaenodontidae "unnamed species"3 Leidy 1869 creodont EF 6’04, left pisiform, "Hyainailouros or Megistotherium indet."
Namasector soriae n. gen. n. sp.3 Morales et al. 2008 creodont EF 118’01, maxilla with M1/-P3/, alveolus of P2/. EF 50’01 and EF 60’01, left and right mandibles, EF 118’01 right P4/ and EF 118’01 right maxilla fragment with the canine root and the alveoli of P2/ and P3/.
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Metapterodon kaiseri n. gen. n. sp.5 Stromer 1926 creodont holotype: left skull fragment with P3 to M2 ("1926 × 1 Munich"). Referred specimens: EF 7’06, right mandíble with partly erupted m/3, alveoli of m/2, and poorly preserved d/4 or m/1. EF 93’01, fragment of left mandíble with m/1 (or d/4) and alveoli of the p/4 and p/3 (incomplete). EF 90’01, anterior fragment of right mandible with canine and incomplete alveoli of the p/2, p/3 and p/4.
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Promicrogale namibiensis n. gen. n. sp.4
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