Cuenca Salina del Istmo del Tehuantepec [Agueguexquite Fm]: Late/Upper Pliocene, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Trochidae
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Calliostoma (Leiotrochus) limonensis
Olsson 1922
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Gastropoda
- Neogastropoda
- Mitridae
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Mitra (Tiara) rhadina
Woodring 1928
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recombined as Subcancilla rhadina | ||||||||||
Gastropoda
- Neogastropoda
- Olividae
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Oliva (Oliva) plicata
(Guppy 1896)
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= Oliva (Oliva) cristobalcoloni
Maury 1917
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Woodring 1964 | |||||||||
original and current combination Oliva cristobalcoloni | ||||||||||
Gastropoda
- Neogastropoda
- Fasciolariidae
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Fasciolaria semistriata
Sowerby 1850
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Gastropoda
- Neogastropoda
- Cochlespiridae
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Ancistrosyrinx miranda
(Guppy 1882)
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recombined as Cochlespira (Ancistrosyrinx) miranda | ||||||||||
Gastropoda
- Neogastropoda
- Conidae
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Conus (Leptoconus) burckhardti
(Bose 1906)
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original and current combination Conus burckhardti | ||||||||||
Conus (Leptoconus) consobrinus
(Sowerby 1850)
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original and current combination Conus consobrinus | ||||||||||
Conus (Leptoconus) turbinopsis
Gardner 1937
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= Conus multiliratus
Olsson 1922
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Hoerle 1976 | |||||||||
recombined as Conasprelloides multiliratus | ||||||||||
Gastropoda
- Neogastropoda
- Drilliidae
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Crassispira alesidota
(Dall 1889)
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Subspecies: Crassispira alesidota magna | ||||||||||
Gastropoda
- Neogastropoda
- Terebridae
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Terebra (Paraterebra) isaacpetiti
(Maury 1925)
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recombined as Terebra (Oreoterebra) isaacpetiti | ||||||||||
Gastropoda
- Neogastropoda
- Turridae
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Scobinella morierei
(Cossmann 1913)
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Polystira barretti
(Guppy 1866)
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Gastropoda
- Neogastropoda
- Muricidae
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Murex (Murex) recurvirostris
(Broderip 1832)
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recombined as Vokesimurex recurvirostris | ||||||||||
Gastropoda
- Neogastropoda
- Harpidae
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Harpa americana
Pilsbry 1922
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= Harpa isthmica
Vokes 1984
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Vokes 1984 | |||||||||
Gastropoda
- Personidae
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Personella floridana
(Olsson and McGinty 1951)
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= Distorsio clathrata
Lamarck 1816
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Landau and Marques da Silva 2010 | |||||||||
Gastropoda
- Naticidae
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Natica (Naticarius) canrena
(Linnaeus 1758)
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recombined as Naticarius canrena | ||||||||||
Subspecies: N. (Naticarius) canrena antinacca | ||||||||||
Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica (Architectonica) nobilis
(Röding 1798)
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original and current combination Architectonica nobilis | ||||||||||
Subspecies: A. (A.) nobilis quadriseriata | ||||||||||
Bivalvia
- Arcida
- Arcidae
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Anadara (Anadara) istmica
Perrilliat 1960
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synonym of Anadara (Rasia) actinophora | ||||||||||
Anadara (Anadara) lienosa
(Say 1832)
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recombined as Anadara (Rasia) lienosa | ||||||||||
Anadara (Anadara) woodringi
Perrilliat 1960
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Anadara (Anadara) arata
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Bivalvia
- Pectinida
- Pectinidae
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Pecten (Euvola) bowdenensis
Dall 1898
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recombined as Euvola bowdenensis | ||||||||||
Amusium (Amusium) sp.
(Röding 1798)
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Bivalvia
- Cardiida
- Cardiidae
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Trigoniocardia (Americardia) media
(Linnaeaus 1758)
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recombined as Americardia media | ||||||||||
see common names |
Geography
Country: | Mexico | State/province: | Veracruz |
Coordinates: | 18.1° North, 94.3° West (view map) | ||
Paleocoordinates: | 18.2° North, 93.8° West | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Pliocene |
Stage: | Piacenzian | 10 m.y. bin: | Cenozoic 6 |
Key time interval: | Late/Upper Pliocene | ||
Age range of interval: | 3.60000 - 2.58800 m.y. ago |
Stratigraphy
Formation: | Agueguexquite | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: 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. |
Lithology and environment
Primary lithology: | micaceous,shelly/skeletal,gray,blue unlithified sandy,carbonaceous claystone |
Includes fossils? | Y |
Lithology description: The sediments consist principally of bluish grey sandy clays, mostly micaceous, with intercalations of grit and sand, poorly bedded, containing a rich fauna of gastropoda and lamellibrancha, and scatterd plant remains. The very base of the unit has layers of quartz pebbles, from hazelnut to walnut in size. No lithification data is reported, however all figured specimens show now evidence of lithified matrix and therefore this collection is assigned as unlithified. | |
Environment: | coastal indet. |
Glacial or sequence phase: | transgressive |
Geology comments: Accumulated during a marine transgression as evidence by basal pebble lag. Deposited in shallow warm water within the neritic zone. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 59420 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2006-04-02 14:57:28 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2008-04-02 14:57:28 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
17059. | M.C. Perrilliat. 1960. Moluscos del Mioceno de la Cuenca Salina del Istmo de Tehuantepec, Mexico. Paleontologia Mexicana 8:1-31 [A. Miller/A. Hendy/A. Hendy] |
Secondary references:
31308 | S. E. Hoerle. 1976. The genus Conus (Mollusca: Gastropoda) from the Alum Bluff Group of northwestern Florida. Tulane Studies in Geology and Paleontology 12(1):1-31 [A. Hendy/A. Hendy] | |
36423 | B. Landau and C. Marques da Silva. 2010. Early Pliocene gastropods of Cubagua, Venezuela: Taxonomy, palaeobiogeography and ecostratigraphy. Palaeontos 19:1-221 [A. Hendy/A. Hendy] | |
31294 | E. H. Vokes. 1984. The genus Harpa (Mollusca: Gastropoda) in the new world. Tulane Studies in Geology and Paleontology 18(1-2):53-60 [A. Hendy/A. Hendy] | |
13232 | W. P. Woodring. 1964. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (gastropods: Columbellidae to Volutidae). United States Geological Survey Professional Paper 306(C):241-297 [A. Miller/A. Hendy/A. Hendy] |