Tonosí Formation

Last updated
Tonosí Formation
Stratigraphic range: Priabonian (Chadronian)
~38–34  Ma
Є
O
S
D
C
P
T
J
K
Pg
N
Type Formation
Lithology
Primary Sandstone
Location
Coordinates 7°24′N80°24′W / 7.4°N 80.4°W / 7.4; -80.4 Coordinates: 7°24′N80°24′W / 7.4°N 80.4°W / 7.4; -80.4
Approximate paleocoordinates 0°48′N104°12′W / 0.8°N 104.2°W / 0.8; -104.2
Region Los Santos Province
CountryFlag of Panama.svg  Panama
Type section
Named for Tonosí
Panama relief location map.jpg
Orange pog.svg
Tonosí Formation (Panama)

The Tonosí Formation is a geologic formation in Panama. It preserves fossils dating back to the Paleogene period (Priabonian). [1]

Contents

Fossil content

Among others, the formation has provided fossils of:

See also

Related Research Articles

<i>Ampullinopsis</i> genus of molluscs

Ampullinopsis is an extinct taxonomic genus of deep-water sea snails, marine gastropod molluscs in the clade Sorbeoconcha. These sea snails were epifaunal grazers. Sea snails of this genus lived from Paleocene epoch to Miocene epoch.

Chagres Formation

The Chagres Formation (Tc) is a geologic formation in the Colón Province of central Panama. The sandstones and siltstones were deposited in a shallow marine environment and preserve fossils dating back to the Middle to Late Miocene period.

Cucaracha Formation

The Cucaracha Formation (Tca) is a geologic formation in Panama. It preserves vertebrate and plant fossils dating back to the Neogene period; Early to Middle Miocene epochs (Hemingfordian). Fossils of the crocodylian Centenariosuchus, the turtle Rhinoclemmys panamaensis and the artiodactyl Paratoceras have been found in the formation.

Gatún Formation

The Gatún Formation (Tg) is a geologic formation in the Colón and Panamá Provinces of central Panama. The formation crops out in and around the Panama Canal Zone. The coastal to marginally marine sandstone, siltstone, claystone, tuff and conglomerate formation dates to the latest Serravallian to Tortonian, from 12 to 8.5 Ma. It preserves many fossils, among others, megalodon teeth have been found in the formation.

Caimito Formation

The Caimito Formation (Tcm) is a geologic formation in Panama. The marls, sandstones and conglomerates preserve bivalve and gastropod fossils dating back to the Late Oligocene to Early Miocene period. The name Caimito was proposed by MacDonald in 1913, named after the Caimito junction in the Panama Railroad during the construction of the Panama Canal.

Culebra Formation

The Culebra Formation (Tcb) is a geologic formation in Panama. It preserves fossils dating back to the Miocene period; Early Miocene epoch, Aquitanian to Burdigalian stages. Fossils of Culebrasuchus have been found in and named after the formation. The thickness of the formation is at least 250 metres (820 ft) thick, and the age has been estimated as from 23 to 19 Ma.

Bohío Formation

The Bohío Formation is a geologic formation in Panama. It preserves fossils dating back to the Late Eocene to Late Oligocene period.

Caraba Formation

The Caraba Formation (Tcr) is a geologic formation in Panama. The formation was first defined in 1950 by Jones as a facies member of the Caimito Formation. The formation consists of poorly lithified, pebbly, tuffaceous, calcareous sandstones and conglomerates and preserves fossils dating back to the Early Oligocene period.

Gatuncillo Formation

The Gatuncillo Formation (Tgo) is a geologic formation in central Panama. The formation is exposed in the Panama Canal Zone and surrounding areas. It preserves fossils dating back to the Middle to Late Eocene period.

Panama Formation

The Panama Formation (Tp) is a geologic formation in Panama. The formation consists of tuffaceous sandstones, conglomerates, tuffaceous shales and algal and foraminifera-rich limestones, and preserves bivalve fossils of Leopecten gatunensis and Nodipecten sp. and dates back to the Late Oligocene period.

Cerros de Sal Formation

The Cerros de Sal Formation is a geologic formation in the southern Dominican Republic. The coastal claystone preserves coral fossils dating back to the Late Miocene period.

Tabera Formation

The Tabera Formation is a geologic formation in Dominican Republic. The shallow marine limestone preserves gastropod and coral fossils dating back to the Late Oligocene period.

Cervicos Limestone

The Cervicos Limestone is a geologic formation in the Dominican Republic. It preserves fossils dating back to the Late Oligocene period, as Orthaulax aquadillensis and Clypeaster concavus.

Crassispira aegis is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Crassispira annella is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Hindsiclava henekeni is an extinct species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, the turrids and allies.

Leucosyrinx nicoya is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Leucosyrinx xenica is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Conasprella burckhardti is an extinct species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

Alajuela Formation

The Alajuela Formation, originally Alhajuela Formation (Tau), is a Late Miocene geologic formation in the Panama Canal Zone of central Panama.

References

  1. Tonosí Formation at Fossilworks.org
  2. Woodring, 1973, p.472

Bibliography

Further reading