IGM Loc. 3681 - Coatzacoalcos [Agueguexquite Fm]: Late Pliocene, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Carditida - Crassatellidae
Bivalvia - Cardiida - Tellinidae
Bivalvia - Cardiida - Cardiidae
Bivalvia - Cardiida - Veneridae
Gouldia insulare (Dall and Simpson 1901)
Bivalvia - Pholadida - Corbulidae
Bivalvia - Arcida - Arcidae
Bivalvia - Nuculida - Nuculidae
Scaphopoda - Dentaliida - Dentaliidae
Gastropoda - Trochidae
Calliostoma sp. Swainson 1840
Gastropoda - Liotiidae
Gastropoda - Opisthobranchiata - Retusidae
Sulcoretusa sulcata (d'Orbigny 1841)
Gastropoda - Opisthobranchiata - Cylichnidae
Acteocina cf. candei (d'Orbigny 1841)
Gastropoda - Heterostropha - Architectonicidae
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla sp. Risso 1826
Gastropoda - Eulimidae
Gastropoda - Cerithiidae
Gastropoda - Neogastropoda - Borsoniidae
Gastropoda - Neogastropoda - Mangeliidae
Gastropoda - Neogastropoda - Terebridae
Gastropoda - Neogastropoda - Conidae
Conus almagrensis Böse 1910
Gastropoda - Neogastropoda - Drilliidae
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Neogastropoda - Columbellidae
Gastropoda - Neogastropoda - Olividae
Gastropoda - Neogastropoda - Muricidae
Gastropoda - Neogastropoda - Cystiscidae
Gastropoda - Neogastropoda - Marginellidae
Gastropoda - Triviidae
Erato maugeriae Gray 1832
Gastropoda - Rissoidae
Schwartziella catesbyana (d'Orbigny 1842)
Gastropoda - Cerithiopsidae
Cerithiopsis vinca (Olsson and Harbison 1953)
Gastropoda - Triphoridae
Triphora hemphilli Bartsch 1907
Gastropoda - Naticidae
Natica sp. Scopoli 1777
Gastropoda - Vitrinellidae
Cyclostremiscus bartschi (Mansfield 1930)
Gastropoda - Caecidae
Caecum sp. Fleming 1813
Caecum cycloferum Folin 1867
Caecum mexicanum Collins 1937
Caecum (Caecum) regulare (Carpenter 1858)
Gastropoda - Epitoniidae
see common names

Geography
Country:Mexico State/province:Veracruz
Coordinates: 18.1° North, 94.4° West (view map)
Paleocoordinates:18.8° North, 93.5° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Pliocene
Stage: Piacenzian 10 m.y. bin: Cenozoic 6
Key time interval: Late Pliocene
Age range of interval: 3.6 - 2.58 m.y. ago
Stratigraphy
Formation:Agueguexquite
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Agueguexquite Formation, for which lithostratigraphic relationships are not stated in english. Overlies the Upper Conception and Filisola Fms (Early-Late Pliocene) according to Collins and Coates (1999, p. 75), and is equivalent to the Tirabuzon Fm of Mexico's Maria Madre Island, and Esmeraldas of NW Ecuador. AGE: Stated to be Pliocene. Assigned here, provisionally, to the late Pliocene age (following PBDB# 59420: "The geological age according to Perilliat (1960) is upper Lower Miocene or lower Middle Miocene (Helvetian or Tortonian). The fauna is apparently closely connected with that from the Choctawhatchee Fm in Florida....The Agueguexquite Fm represents the youngest Miocene deposition as yet found in the Coatzacoalcos Basin and can approximately can be correlated with the Mid-upper Gatun Fm in Panama or with basal Bowden Fm of Jamaica (Thalmann 1935). More recent descriptions of fauna from the Agueguexquite Fm assign it to the Pliocene, more specifically the middle Pliocene (N20). This also matches revised ages for the Bowden Fm, although the Gatun spans the Late Miocene and Early Pliocene. Late Pliocene according to Collins and Coates (1999, p. 75)". STRATIGRAPHIC POSITION: From unknown position in formation.
Lithology and environment
Primary lithology: unlithified "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Assumed to be siliciclastic based on other collections. LITHIFICATION: Assumed unlithified, on the basis of preservation of figured specimens.
Environment:coastal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:bulk,surface (in situ),sieve,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: COLLECTOR: Not stated. REPOSITORY: IGM, Mexico.
Taxonomic list comments:COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with modern nomenclature, and consistent use of subgenera and species-level assignments.
Metadata
Database number:134769
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2012-10-16 06:47:51 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2014-10-16 06:47:51
Creative Commons license:CC0
Reference information

Primary reference:
43283. M. C. Perrilliat and P. Flores-Guerrero. 2011. Moluscos de la Formación Agueguexquite (Plioceno inferior) de Coatzacoalcos, Veracruz, México. Revista Mexicana de Ciencias Geológicas 28(3):379-397 [A. Hendy/A. Hendy]