Ameki Eocene SE Nigeria Lithofacies E: Eocene, Nigeria

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Bendelute conicoturrita
179 individuals
Crassotrea sp.
Cancellaridae indet.
23 individuals
Reptilia - Testudines
Testudines indet. Batsch 1788
Chondrichthyes - Lamniformes - Odontaspididae
Odontaspis sp. Agassiz 1838
Chondrichthyes - Orectolobiformes - Ginglymostomatidae
Ginglymostoma sp. Müller and Henle 1838
Chondrichthyes - Myliobatiformes - Myliobatidae
Myliobatis sp. Cuvier 1816
Gastropoda - Turritellidae
Turritella amekiensis
2011 individuals
Gastropoda - Naticidae
Naticidae indet. Guilding 1834
1 individual
Natica amekiensis
1044 individuals
Gastropoda - Rostellariidae
Cyrtulotibia unidigitata (Newton 1922)
998 individuals
Gastropoda - Strombidae
Strombidae indet. Rafinesque 1815
119 individuals
Gastropoda - Neogastropoda - Volutidae
Volutidae indet. Rafinesque 1815
24 individuals
Volutocorbis multispinosa
148 individuals
spelled with current rank as Athleta (Volutocorbis)
Gastropoda - Neogastropoda - Turridae
Turridae indet. Swainson 1840
296 individuals
Surculites ingens
224 individuals
Amekicythara douvillei
163 individuals
Eopleurotoma nigeriensis Newton 1922
1541 individuals
Gastropoda - Neogastropoda - Conidae
Conus amekiensis
111 individuals
Gastropoda - Neogastropoda - Clavatulidae
Turricula africana
503 individuals
Gastropoda - Neogastropoda - Fasciolariidae
Glyptostyla sp.
149 individuals
Other genera within family may be included in count.
Gastropoda - Neogastropoda - Buccinidae
Pseudoliva sp. Swainson 1840
111 individuals
Other genera within family may be included in count.
Gastropoda - Neogastropoda - Mitridae
Mitra sp. Lamarck 1798
958 individuals
Other genera within family may be included in count.
Gastropoda - Neogastropoda - Cancellariidae
Bonellitia amekiensis
179 individuals
Gastropoda - Heterostropha - Architectonicidae
Architectonica sp. Röding 1798
123 individuals
Other genera within family may be included in count.
Bivalvia - Nuculanida - Nuculanidae
Nuculana sp. Link 1807
257 individuals
Other genera within family may be included in count.
Bivalvia - Carditida - Carditidae
Glans sp. Mühfeld 1811
3106 individuals
Other genera within family may be included in count.
Bivalvia - Cardiida - Veneridae
Tivelina sp. Cossmann 1886
845 individuals
Other genera within family may be included in count.
Bivalvia - Cardiida - Tellinidae
Macoma sp. Leach 1819
Bivalvia - Pholadida - Corbulidae
Varicorbula sp. Grant and Gale 1931
403 individuals
spelled with current rank as Corbula (Varicorbula)
Other genera within family may be included in count.
Bivalvia - Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758
Bivalvia - Arcida - Noetiidae
Arcopsis sp. Koenen 1885
443 individuals
Other genera within family may be included in count.
Scaphopoda - Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758
523 individuals
Other genera within family may be included in count.
Ostracoda - Platycopida - Cytherellidae
Cytherella sp. Jones 1849
Ostracoda - Podocopida - Candonidae
Paracypris sp. Sars 1866
Ostracoda - Podocopida - Bythocyprididae
Bythocypris sp. Brady 1880
Ostracoda - Podocopida - Leguminocythereidae
Basslerites sp.
Ostracoda - Podocopida - Trachyleberididae
Buntonia sp. Howe 1935
Togoina sp.
Costa sp.
Thecostraca - Balanomorpha - Balanidae
Balanus sp. Da Costa 1778
Anthozoa
Anthozoa indet. Ehrenberg 1834
Globothalamea - Rotaliida - Nonionidae
Nonion sp. Monfort 1808
Globothalamea - Rotaliida - Discorbidae
Valvulineria sp. Cushman 1926
Globothalamea - Rotaliida - Cibicididae
Cibicides sp. Monfort 1808
Bagginidae
Cancris sp. Monfort 1808
Rotaliidae
Rotalia sp. Lamarck 1804
Tubothalamea - Miliolida - Miliolidae
Spiroloculina sp. d'Orbigny 1826
Tubothalamea - Miliolida - Hauerinidae
Quinqueloculina sp. d'Orbigny 1826
see common names

Geography
Country:Nigeria State/province:Imo
Coordinates: 6.8° North, 7.1° East (view map)
Paleocoordinates:1.1° North, 1.2° East
Basis of coordinate:based on nearby landmark
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2-3
Key time interval:Eocene
Age range of interval:56.00000 - 33.90000 m.y. ago
Stratigraphy
Formation:Ameki
Stratigraphic resolution:member
Stratigraphy comments: 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.
Lithology and environment
Primary lithology:shelly/skeletal "shale"
Includes fossils?Y
Environment:marine indet.
Geology comments: Paleoenvironmental interpretations listed include a sandy mud substrate with a maximum depth of 20m in warm humid normal marine waters that are well oxygenated and locally anoxic.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils,microfossils
Collection methods and comments
Collection excludes:some genera,some macrofossils,some microfossils
Collection methods:field collection
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:Taxonomic list compiled from tables and text.
Metadata
Database number:42655
Authorizer:L. Ivany Enterer:C. Visaggi
Modifier:L. Ivany Research group:marine invertebrate
Collections that are a subset of this one:41394
Created:2004-08-03 12:50:46 Last modified:2005-08-17 16:42:50
Access level:the public Released:2004-08-03 12:50:46
Creative Commons license:CC BY
Reference information

Primary reference:
11345. 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]