AMo-1 Greggs Landing Marl: Thanetian, Alabama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Scleractinia - Oculinidae
Oculina alabamensis Vaughan 1900
7 specimens
Anthozoa - Scleractinia - Columastreidae
Haimesastraea conferta
45 specimens
original and current combination Haimesiastraea
Anthozoa - Scleractinia - Dendrophylliidae
Balanophyllia desmophyllum Milne-Edwards and Haime 1848
27 specimens
Balanophyllia (Eupsammia) elaborata
43 specimens
synonym of Balanophyllia
Anthozoa - Scleractinia - Astrocoeniidae
Madracis gregorioi Vaughan 1900
1 specimen
Bivalvia - Nuculanida - Nuculanidae
Calorhadia pharcida (Dall 1898)
11 specimens
recombined as Calorhadia (Calorhadia) pharcida
Bivalvia - Nuculida - Nuculidae
Nucula sp. Lamarck 1799
1 specimen
Bivalvia - Ostreida - Ostreidae
Ostrea sinuosa
30 specimens
Bivalvia - Pectinida - Pectinidae
Chlamys greggi Harris 1897
8 specimens
recombined as Dhondtichlamys greggi
Bivalvia - Arcida - Glycymerididae
Glycymeris idonea (Conrad 1865)
11 specimens
original and current combination Axinea idonea
Glycymeris idonea subsp.
Bivalvia - Arcida - Cucullaeidae
Cucullaea gigantea Conrad 1862
62 specimens
Cucullaea gigantea var.
Bivalvia - Arcida - Arcidae
Barbatia cuculloides (Conrad 1833)
1 specimen
Barbatia cuculloides var.
Bivalvia - Carditida - Carditidae
Venericardia greggiana Dall 1903
4 specimens
recombined as Venericardia (Baluchicardia) greggiana
Venericardia aposmithi
6 specimens
Venericardia nanaplata Gardner and Bowles 1939
105 specimens
Venericardia nanna
Bivalvia - Carditida - Crassatellidae
Crassatella tumidula Whitfield 1865
1 specimen
Bivalvia - Hiatellida - Hiatellidae
Panopea alabama
1 specimen
Bivalvia - Cardiida - Cardiidae
Nemocardium harrisi
6 specimens
Bivalvia - Cardiida - Tellinidae
Tellina greggi
33 specimens
Tellina trumani Harris 1897
2 specimens
Bivalvia - Cardiida - Trapezidae
cf. Oryctomya prima
1 specimen
spelled with current rank as Coralliophaga (Oryctomya)
Bivalvia - Cardiida - Veneridae
Pitar nuttalliopsis
69 specimens
Pitar nuttalliopsis greggi
Bivalvia - Pholadida - Pholadidae
Pholas alatoidea
8 specimens
Bivalvia - Pholadida - Corbulidae
Corbula subengonata Dall 1898
2 specimens
recombined as Cuneocorbula subengonata
Scaphopoda - Gadilida - Gadilidae
Cadulus sp. Philippi 1844
1 specimen
"Cadulus abruptus"
Gastropoda - Heterostropha - Architectonicidae
Architectonica greggi
1 specimen
Architectonica intusa
1 specimen
Architectonica sp. Röding 1798
3 specimens
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea aperta (Solander 1766)
9 specimens
recombined as Calyptraea (Trochita) aperta
Gastropoda - Rostellariidae
Calyptraphorus trinodiferus
123 specimens
Gastropoda - Aporrhaidae
Aporrhais aldrichi
3 specimens
Gastropoda - Ficidae
Priscoficus juvenis
12 specimens
Priscoficus triserialis
2 specimens
Perissolax eocensis
1 specimen
Gastropoda - Neogastropoda - Turbinellidae
Fulgurofusus rugatus
2 specimens
Gastropoda - Neogastropoda - Volutidae
Caricella cf. pyruloides Conrad 1832
2 specimens
Athleta tuomeyi
30 specimens
Gastropoda - Neogastropoda - Cancellariidae
Bonellitia graciloides
2 specimens
Gastropoda - Neogastropoda - Cochlespiridae
cf. Ancistrosyrinx greggi
2 specimens
synonym of Cochlespira
Gastropoda - Neogastropoda - Clavatulidae
Surcula nasuta
75 specimens
synonym of Turricula
Gastropoda - Neogastropoda - Turridae
"Pleurotoma" capax
12 specimens
synonym of Turris
Hemisurcula silicata
6 specimens
Lyrosurcula cf. sylvaerupis
3 specimens
Gastropoda - Neogastropoda - Melongenidae
Cornulina sp. Conrad 1853
1 specimen
"Cornulina armigera"
Levifusus pagodiformis (Heilprin 1881)
3 specimens
Gastropoda - Neogastropoda - Nassariidae
Nassarius exilis
9 specimens
Gastropoda - Neogastropoda - Columbellidae
Astyris cf. subfaxa
1 specimen
Gastropoda - Neogastropoda - Buccinidae
Cantharus elegantissimus
22 specimens
cf. Pseudoneptunea harrisi
7 specimens
Pseudoliva tuberculifera Conrad 1860
2 specimens
Gastropoda - Neogastropoda - Fasciolariidae
Lirofusus subtenuis
5 specimens
Mazzalina tuomeyi
3 specimens
Gastropoda - Vermetidae
Serpulorbis sp. Sasso 1827
1 specimen
Gastropoda - Naticidae
cf. Natica aperta
30 specimens
? Sinum sp. Röding 1798
1 specimen
Lacunaria alabamiensis
52 specimens
Euspira marylandica (Conrad 1865)
17 specimens
Euspira marylandica var.
Gastropoda - Turritellidae
Mesalia alabamiensis (De Gregorio 1890)
34 specimens
Mesalia alabamiensis cf. tetradeiras
Turritella mortoni Conrad 1830
14 specimens
recombined as Kapalmerella mortoni
Turritella mortoni postmortoni
Turritella bellifera
49 specimens
Turritella praecincta
39 specimens
Gastropoda - Vasidae
? Sceptrum perulum
1 specimen
Chondrichthyes - Selachii
Selachii indet.
2 specimens
teeth
see common names

Geography
Country:United States State/province:Alabama County:Monroe
Coordinates: 31.8° North, 87.4° West (view map)
Paleocoordinates:34.3° North, 70.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Paleocene
Stage:Thanetian 10 m.y. bin:Cenozoic 1
Key time interval:Thanetian
Age range of interval:59.20000 - 56.00000 m.y. ago
Stratigraphy
Geological group:Wilcox Formation:Tuscahoma Member:Greggs Landing Marl
Stratigraphic resolution:group of beds
Stratigraphy comments: The Greggs Landing Marl Member, about 6 feet thick, exposed near the bottom of a high bluff, yields numerous well preserved mollusks and a colonial coral. The Bells Landing Marl Member is exposed near the top of the steep bluff 27 feet higher than the top of the Greggs Landing Marl Member and contains the characteristic large spheroidal concretions and large Ostrea sinuosa, Venericardia aposmithii and Turritella postmortoni and a few other characteristic fossils which fall down the bluff and are mixed with the Greggs Landing fossils.
Lithology and environment
Primary lithology:fine,medium,glauconitic,gray,green unlithified silty,calcareous sandstone
Secondary lithology:glauconitic unlithified sandy sandstone
Lithology description: Greggs Landing Marl Member is sand, grayish-green, weathers to brown, massive, fine- to medium grained, silty, calcareous, glauconitic, very fossiliferous. The lower bed contains small particles of lignite and spheroidal calcareous sandstone concretions.
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body,concretion
Size of fossils:mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:80495
Authorizer:A. Miller Enterer:J. Sessa
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:2008-04-21 12:13:35 Last modified:2018-05-13 15:17:43
Access level:the public Released:2008-04-21 12:13:35
Creative Commons license:CC BY
Reference information

Primary reference:

124. L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13(1):1-602 [M. Patzkowsky/K. Layou/P. Mannion]

Secondary references:

34008 L. C. Ivany, C. Pietsch, J. C. Handley, R. Lockwood, W. D. Allmon and J. A. Sessa. 2018. Little lasting impact of the Paleocene-Eocene Thermal Maximum on shallow marine mollusk faunas. Science Advances [J. Sessa/J. Sessa/J. Sessa]
29915 J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa]
28506 J. A. Sessa, M. E. Patzkowsky, and T. J. Bralower. 2009. Impact of lithification on the diversity, size distribution, and recovery dynamics of marine invertebrate assemblages. Geology 37(2):115-118 [M. Patzkowsky/J. Sessa/J. Sessa]