Where: Imo, Nigeria (6.8° N, 7.1° E: paleocoordinates 1.1° N, 1.2° E)
• coordinate based on nearby landmark
When: Ameki Formation, Eocene (56.0 - 33.9 Ma)
• The Ameki Formation consists of five lithofacies: (A) clay-shale and limstone facies, (B) silty sandstone facies, (C) bioturbated sandstone facies, (D) mudrock facies, and (E) shelly shale facies. This collection includes fossils from samples N9, N10, and N11 of lithofacies E.
• member-level stratigraphic resolution
Environment/lithology: marine; shelly/skeletal shale
Size classes: macrofossils, mesofossils, microfossils
Primary reference: I. Arua. 1988. Paleoecology of the Eocene Ameki Formation of southeastern Nigeria. Journal of African Earth Sciences 7(7/8):925-932 [L. Ivany/C. Visaggi/C. Visaggi]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 42655: authorized by Linda Ivany, entered by Christy Visaggi on 03.08.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Anthozoa | |
Anthozoa indet. Ehrenberg 1834 | |
Reptilia | |
Testudines indet. Batsch 1788 turtle | |
Chondrichthyes | |
Ginglymostoma sp. Müller and Henle 1838 nurse shark | |
Odontaspis sp. Agassiz 1838 sand tiger shark | |
Myliobatis sp. Cuvier 1816 eagle ray | |
Scaphopoda | |
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Bivalvia | |
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Ostrea sp. Linnaeus 1758 oyster | |
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"Varicorbula sp." = Corbula (Varicorbula)
"Varicorbula sp." = Corbula (Varicorbula) Grant and Gale 1931 clam Other genera within family may be included in count.
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Macoma sp. Leach 1819 tellin clam | |
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Gastropoda | |
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Turritella amekiensis turret shell | |
Naticidae indet. Guilding 1834 moon snail
Natica amekiensis moon snail | |
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Bonellitia amekiensis snail | |
Turridae indet. Swainson 1840 turrid
Amekicythara douvillei turrid
Surculites ingens turrid
Eopleurotoma nigeriensis Newton 1922 turrid | |
Conus amekiensis cone shell | |
Turricula africana snail | |
Volutidae indet., "Volutocorbis multispinosa" = Athleta (Volutocorbis)
Volutidae indet. Rafinesque 1815 volute
"Volutocorbis multispinosa" = Athleta (Volutocorbis) volute | |
Cyrtulotibia unidigitata Newton 1922 snail | |
Strombidae indet. Rafinesque 1815 true conch | |
Thecostraca | |
Balanus sp. Da Costa 1778 barnacle | |
Ostracoda | |
Cytherella sp. Jones 1849 ostracod | |
Bythocypris sp. Brady 1880 ostracod | |
Paracypris sp. Sars 1866 ostracod | |
Basslerites sp. ostracod | |
Foraminifera | |
Rotalia sp. Lamarck 1804 | |
Cancris sp. Monfort 1808 | |
Tubothalamea | |
Quinqueloculina sp. d'Orbigny 1826 | |
Spiroloculina sp. d'Orbigny 1826 | |
Globothalamea | |
Valvulineria sp. Cushman 1926 | |
Nonion sp. Monfort 1808 | |
Cibicides sp. Monfort 1808 |