Alto Guayacan (Miocene of Costa Rica)

Where: Limon, Costa Rica (9.6° N, 82.6° W: paleocoordinates 9.3° N, 81.3° W)

• coordinate stated in text

• local area-level geographic resolution

When: Uscari Formation (Limon Group), Late/Upper Miocene (11.6 - 5.3 Ma)

• Age based in Collins et al.

• formation-level stratigraphic resolution

Environment/lithology: marine; green claystone

Size class: macrofossils

Collection methods: bulk, sieve,

• Material from Museo de Zoologia de Ia Escuela de Biologia (UCR)

Primary reference: C. A. Laurito. 1999. Los selaceos fósiles de Ia localidad de Alto Guayacan ( y otros ictiolitos asociados). 168 [C. Jaramillo/C. Pimiento]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 162678: authorized by Carlos Jaramillo, entered by Catalina Pimiento on 01.10.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squaliformes - Dalatiidae
Isistius triangulus Probst 1879 elasmobranch
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Odontaspidida - Alopiidae
Alopias superciliosus Lowe 1840 thresher shark
 Plagiostomi - Squalidae
"Carcharocles megalodon" = Otodus megalodon, Squalus sp.
"Carcharocles megalodon" = Otodus megalodon Agassiz 1843 megalodon
Squalus sp. Linnaeus 1758 dogfish shark
 Rajiformes - Rajidae
Raja sp. Linnaeus 1758 skate
 Rajiformes - Rhynchobatidae
Rhynchobatus pristinus Probst 1877 wedgefish
 Myliobatiformes - Mobulidae
Manta sp. Bancroft 1829 manta
 Myliobatiformes - Dasyatidae
Dasyatis dianapizarroae whiptail stingray
Dasyatis cavernosa Probst 1877 whiptail stingray
 Myliobatiformes - Rhinopteridae
Rhinoptera studeri Agassiz 1843 cownose ray
 Pristiformes - Pristidae
Pristis pristis Linnaeus 1758 sawfish
 Lamniformes - Lamnidae
Isurus retroflexus Agassiz 1843 mako shark
 Carchariniformes - Carcharhinidae
Physogaleus sp. Cappetta 1980 requiem shark
Scoliodon taxandriae requiem shark
Isogomphodon acuarius daggernose shark
Galeocerdo aduncus Agassiz 1843 tiger shark
Carcharhinus cionei requiem shark
Carcharhinus falciformis Bibron 1841 requiem shark
Carcharhinus priscus Agassiz 1843 requiem shark
Rhizoprionodon fischeuri sharpnose shark
 Carchariniformes - Sphyrnidae
Sphyrna zygaena Linnaeus 1758 hammerhead shark
 Carchariniformes - Hemigaleidae
"Hemipristis serra" = Hemipristis heteropleurus Agassiz 1844 ground shark
 Carchariniformes - Triakidae
Mustelus lunulatus hound shark
 Heterodontiformes - Heterodontidae
  - Scyllidae
Scyliorhinus sp. Blainville 1816 shark
 Orectolobiformes - Rhincodontidae
"Rhiniodon typus" = Rhincodon typus
"Rhiniodon typus" = Rhincodon typus Smith 1828 whale shark
 Orectolobiformes - Orectolobidae
Ginglymostoma delfortriei Daimeries 1889 wobbegong
 Hexanchiformes - Hexanchidae
Heptranchias sp. Rafinesque 1810 sevengill shark
Hexanchus sp. Rafinesque 1810 sixgill shark
 Acanthomorphata - Sphyraenidae
Sphyraena barracuda Edwards 1771 barracuda
 Scombriformes - Trichiuridae
Trichiurus sp. Linnaeus 1758
 Spariformes - Sparidae
Pagrus sp. Lacépède 1802
 Tetraodontiformes - Tetraodontidae
Tetraodon sp. Linnaeus 1758