Where: Tanzania (4.8° S, 34.3° E: paleocoordinates 12.6° S, 27.0° E)
• coordinate stated in text
• local area-level geographic resolution
When: Lutetian (47.8 - 41.3 Ma)
• "early middle Eocene (Lutetian)... A Pb-U date of 45.83 Ma (+/0 0.17) was recently obtained from a zircon crystal at the base of the Mahenge sequence" (Gunnell et al. 2003)
•"Layers 7 and 8... are the most productive... these alone have yielded 57 per cent of the fishes, 56 per cent of the leaves and all of the insects" (Báez and Harrison 2005)
• member-level stratigraphic resolution
Environment/lithology: crater lake; lithified, calcareous mudstone and poorly lithified shale
Size class: macrofossils
Preservation: adpression
Collected in 1996
Collection methods: quarrying, mechanical, peel or thin section,
• Cuticle preparations were unsuccessful because cuticle is poorly preserved. Crearings of leaflets were prepared according to the methods in Herendeen and Dilcher (1990).
•National Museum of Tanzania collection
Primary reference: P. S. Herendeen and B. F. Jacobs. 2000. Fossil Legumes from the Middle Eocene (46.0 Ma) Mahenge Flora of Singida, Tanzania. American Journal of Botany 87(9):1358-1366 [H. Wang/M. Arakaki/H. Wang]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 31499: authorized by Hongshan Wang, entered by Monica Arakaki on 14.05.2003, edited by John Alroy
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Angiospermae | |
Acacia mahengense n. sp.
Acacia mahengense n. sp. Herendeen and Jacobs 2000 wattle | |
Amphibia | |
Singidella latecostata n. gen. n. sp.1
Singidella latecostata n. gen. n. sp.1 Báez and Harrison 2005 clawed frog type and one other specimen are from Sublevel 7; two referred speciens are from Level 8
| |
Mammalia | |
Tanzanycteris mannardi n. gen. n. sp.2
| |
Actinopteri | |
Osteoglossomorpha indet.1 Greenwood et al. 1966 | |
| |
Eocitharinus macrognathus n. gen. n. sp.3
Eocitharinus macrognathus n. gen. n. sp.3 Murray 2003 | |
| |
Aphanocalyx singidaensis n. sp.
Aphanocalyx singidaensis n. sp. Herendeen and Jacobs 2000 |