Lago Alajuela: Tortonian, Panama
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Humiriaceoxylon sp.
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Glottidia sp.
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Chaperia sp.
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Cyclostamata indet.
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cf. Prinocidaris sp.
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Annonoxylon sp.
Boureau 1950
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Angiospermae
- Arecaceae
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Palmoxylon sp.
Schenk 1882
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species A & B | ||||||||||
Angiospermae
- Fabales
- Fabaceae
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Fabaceae indet.
Lindley 1836
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Angiospermae
- Rosales
- Rosaceae
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Parinarioxylon sp.
Pfeiffer and Heurn 1928
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Angiospermae
- Malpighiales
- Phyllanthaceae
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? Phyllanthaceae indet.
Martinov 1820
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Angiospermae
- Sapindales
- Sapindaceae
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Sapindaceae indet.
de Jussieu 1789
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Angiospermae
- Malvales
- Malvaceae
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Malvaceae indet.
de Jussieu 1789
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Thecostraca
- Balanomorpha
- Balanidae
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cf. Tamiosoma sp.
Conrad 1856
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Malacostraca
- Decapoda
- Callianassidae
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Callianassidae indet.
Dana 1852
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Polychaeta
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Polychaeta indet.
Grube 1850
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Gymnolaemata
- Cheilostomata
- Hippoporidridae
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Hippoporidra sp.
Canu and Bassler 1927
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Stenolaemata
- Cyclostomata
- Plagioeciidae
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Plagioeciidae indet.
Canu 1918
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Bivalvia
- Nuculanida
- Yoldiidae
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Yoldiidae indet.
Habe 1977
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Bivalvia
- Ostreida
- Ostreidae
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Crassostrea sp.
Sacco 1897
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Bivalvia
- Pectinida
- Plicatulidae
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Plicatula sp.
Lamarck 1801
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Bivalvia
- Pectinida
- Anomiidae
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Anomia sp.
Linnaeus 1758
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Bivalvia
- Pectinida
- Pectinidae
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Euvola sp.
(Dall 1898)
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Nodipecten sp.
Dall 1898
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Bivalvia
- Arcida
- Arcidae
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Arcidae indet.
Lamarck 1809
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Bivalvia
- Carditida
- Carditidae
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Venericardia sp.
Lamarck 1801
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Bivalvia
- Solenida
- Pharidae
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Ensis sp.
Schumacher 1817
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea sp.
(Menard 1807)
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Bivalvia
- Cardiida
- Gastrochaenidae
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Gastrochaenidae indet.
Gray 1840
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Bivalvia
- Cardiida
- Veneridae
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Chionopsis sp.
Olsson 1932
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Chione sp.
von Mühlfield 1811
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Lirophora sp.
Conrad 1863
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Macrocallista sp.
Meek 1876
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Pitar sp.
Römer 1857
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Bivalvia
- Pholadida
- Corbulidae
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Corbulidae indet.
Lamarck 1818
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Scaphopoda
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Scaphopoda indet.
Bronn 1862
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Gastropoda
- Opisthobranchia
- Haminoeidae
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Haminoeidae indet.
Pilsbry 1895
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Gastropoda
- Heterostropha
- Architectonicidae
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Architectonicidae indet.
Gray 1850
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Calyptraea sp.
Lamarck 1799
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Gastropoda
- Strombidae
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Strombus sp.
Linnaeus 1758
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Gastropoda
- Neogastropoda
- Turbinellidae
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Turbinella sp.
Lamarck 1799
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Gastropoda
- Neogastropoda
- Marginellidae
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Marginellidae indet.
Fleming 1828
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Gastropoda
- Neogastropoda
- Olividae
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Oliva sp.
Bruguière 1789
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Olivella sp.
Swainson 1831
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Gastropoda
- Neogastropoda
- Conidae
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Conus sp.
Linnaeus 1758
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Gastropoda
- Neogastropoda
- Terebridae
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Terebra sp.
Bruguière 1789
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Gastropoda
- Neogastropoda
- Turridae
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Turridae indet.
Swainson 1840
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Gastropoda
- Neogastropoda
- Melongenidae
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Melongena sp.
Schumacher 1817
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Gastropoda
- Neogastropoda
- Buccinidae
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Cymatophos sp.
Pilsbry and Olsson 1941
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Gastropoda
- Xenophoridae
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Xenophora sp.
Fischer von Waldheim 1807
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Gastropoda
- Tonnidae
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Malea sp.
Valenciennes 1833
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Gastropoda
- Cypraeidae
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Cypraeidae indet.
Rafinesque 1815
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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Gastropoda
- Turritellidae
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Turritellidae indet.
Lovén 1847
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Gastropoda
- Cerithiidae
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Cerithiidae indet.
(Fleming 1822)
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Cephalopoda
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Coleoidea indet.
Bather 1888
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Reptilia
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Aves indet.
(Linnaeus 1758)
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Tomistominae indet.
Eastman 1902
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Reptilia
- Testudines
- Testudinidae
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Testudinidae indet.
Batsch 1788
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Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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Reptilia
- Testudines
- Cheloniidae
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Cheloniidae indet.
Bonaparte 1832
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Reptilia
- Testudines
- Podocnemididae
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Bairdemys sp.
Gaffney and Wood 2002
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n. sp. | ||||||||||
Mammalia
- Proboscidea
- Gomphotheriidae
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Gomphotherium sp.
Burmeister 1837
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MacFadden et al. 2015 | |||||||||
Mammalia
- Sirenia
- Dugongidae
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cf. Dugongidae indet.
Gray 1821
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Mammalia
- Carnivora
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cf. Carnivora indet.
Bowdich 1821
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Mammalia
- Perissodactyla
- Equidae
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Dinohippus sp.
Quinn 1955
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Cormohipparion sp.
Skinner and MacFadden 1977
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Mammalia
- Tayassuidae
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Tayassuidae indet.
Palmer 1897
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Chondrichthyes
- Carcharhiniformes
- Hemigaleidae
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Hemipristis serra
Agassiz 1835
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Chondrichthyes
- Carcharhiniformes
- Sphyrnidae
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Sphyrna mokarran
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Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Negaprion brevirostris
Poey 1868
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Carcharhinus sp.
de Blainville 1816
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Chondrichthyes
- Lamniformes
- Otodontidae
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Carcharocles megalodon
(Agassiz 1835)
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recombined as Otodus megalodon | ||||||||||
Chondrichthyes
- Rhinopristiformes
- Pristidae
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Pristis sp.
Linck 1790
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Chondrichthyes
- Myliobatiformes
- Myliobatidae
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Myliobatis sp.
Cuvier 1816
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Rhinoptera sp.
Cuvier 1829
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Echinoidea
- Clypeasteroida
- Clypeasteridae
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Clypeaster sp.
Lamarck 1801
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see common names |
Geography
Country: | Panama |
Coordinates: | 9.2° North, 79.6° West (view map) |
Paleocoordinates: | 9.0° North, 78.2° West |
Basis of coordinate: | stated in text |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Tortonian | 10 m.y. bin: | Cenozoic 6 |
Key time interval: | Tortonian | ||
Age range of interval: | 11.62000 - 7.24600 m.y. ago | ||
Age estimate: | 9.77 ± .22 Ma (Sr isotope) |
Stratigraphy
Formation: | Alajuela | ||||
Stratigraphy comments: Comparison of the mean ratio with the global seawater 87Sr/86Sr curve for the Neogene [13] indicates a late Miocene age of 9.77 ± 0.22 Ma for this por- tion of the Alajuela Formation (Fig 5). The strontium dates also confirm a late Miocene age for the associated vertebrate fossils including the biochronologically informative horses and proboscidean Gomphotherium sp.
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Lithology and environment
Primary lithology: | sandstone |
Includes fossils? | Y |
Lithology description: The Alajuela Formation includes a >25 m-thick basal package of interbedded, clast-supported conglomerates and litharenite sandstones that grades into an ~85 m-thick package of calcareous sandstones and calcarenites, representing a transition from tide-dominated, potentially estuarine, coastal environments to wave-dominated, shallow-water carbonate environments [10,18]. The 82 m-thick composite section (Fig 3), measured in proximity to the fossil localities on the southern extent of Lago Alajuela (Table 1), is subdivided into three distinctive lithological intervals to summarize major facies transitions during this transgression. | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Metadata
Also known as: | UF VP YPA088 | ||
Database number: | 187583 | ||
Authorizer: | M. Uhen | Enterer: | M. Uhen | Research group: | vertebrate |
Created: | 2017-08-02 17:19:01 | Last modified: | 2017-08-02 17:19:01 |
Access level: | the public | Released: | 2017-08-02 17:19:01 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
62967. | B. J. MacFadden, D. S. Jones, N. A. Jud, J. W. Moreno, G. S. Morgan, R. W. Portell, V. J. Perez, S. M. Moran, and A. R. Wood. 2017. Integrated Chronology, Flora and Faunas, and Paleoecology of the Alajuela Formation, Late Miocene of Panama. PLoS One 12(1):e0170300 [M. Uhen/M. Uhen/M. Uhen] |
Secondary references:
63763 | B.J. MacFadden, G.S. Morgan, D.S. Jones and A.F. Rincon. 2015. Gomphothere proboscidean (Gomphotherium) from the late Neogene of Panama. Journal of Paleontology 89(2):360-365 [M. Uhen/J. Bryant/J. Carrillo] |