Jagua Formation
| Big Wave Bay | |
|---|---|
| Stratigraphic range: Holocene/>~ | |
| Type | Geological formation |
| Thickness | 160 m (520 ft) |
| Lithology | |
| Primary | Shale, limestone |
| Location | |
| Country |  Hong Kong |
  Jagua Formation (Hong Kong) | |
Description
The formation comprises marine shales and limestones. The 60 metres (200 ft) thick Jagua Vieja Member consists of black shales and horizontally laminated marly micritic to biomicritic limestones. The latter contains calcareous concretions which the fossils are found in.[1] The formation overlies the San Cayetano Formation and is overlain by the Guasasa Formation. The bedding direction is steeply dipping towards the northwest.
Fossil content
Vertebrate paleofauna
| Paleofauna of the Jagua Formation | |||||||
|---|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Description | Notes | Image | |
| Cacibupteryx | C. caribensis | Mogote Jagua Vieja | Jagua Vieja Mb. | A rhamphorhynchid pterosaur | [2] | ||
| Caribemys | C. oxfordiensis | Viñales Valley | A pleurodiran turtle | [3] | |||
| Cryptoclidus | C. vignalensis | Laguna de Piedra | Jagua Vieja Mb. | A sauropterygian | [4] | ||
| Gallardosaurus | G. iturraldei | Sierra de Caiguanabo ~8 km (5.0 mi) east of Viñales |
Jagua Vieja Mb. | A pliosaurid | [5] |  | |
| Nesodactylus | N. hesperius | Hoyo del Palmar 10 km (6.2 mi) northeast of Viñales |
Jagua Vieja Mb. | A rhamphorhynchid pterosaur | [2] | ||
| Notoemys | N. oxfordensis | Valle de Viñales | A pleurodiran turtle | ||||
| Sphaerodontes | S. caroli | Laguna de Piedra | Jagua Vieja Mb. | An ichthyosaur | [4] | ||
| Vinialesaurus | V. caroli | Viñales | A cryptoclidid plesiosaur | [6] |  | ||
| Geosaurus | Puerta de Ancón Sierra de Guasasa |
Jagua Vieja Mb. | A Metriorhynchid | [7] |  | ||
| Ophthalmosauridae | Ophthalmosauridae indet. | [8] | |||||
| Somphospondyli | Somphospondyli indet. | Material consists of a first or second metacarpal, now lost.[9] |  | ||||
Other fossils
- Favreina
- Globochaete
- Gryphaea mexicana - Pan de Azúcar Mb.[10]
- Lepidotes gloriae[11]
- Liostrea mairei[12]
- L. sandalina - Zacarías Mb.[13]
- Nanogyra (Nanogyra) nana - Zacarías Mb.[13]
- Ostrea broughtoni - Zacarías Mb.[13]
- Plicatula cf. weymouthiana - Zacarías Mb.[13]
- Voltzia palmeri[14]
- Perisphinctes sp.[15]
See also
References
- ^ Iturralde Vinent & Norell, 1996
- ^ a b Gasparini et al., 2004
- ^ De la Fuente & Iturralde Vinent, 2001
- ^ a b Laguna de Piedra at Fossilworks.org
- ^ Gasparini, 2009
- ^ Gasparini et al., 2002
- ^ Gasparini & Iturralde Vinent, 2001, p.538
- ^ Gasparini & Iturralde Vinent, 2001, p.542
- ^ Apesteguía, S.; Ceballos Izquierdo, Y.; Iturralde-VINENT, M. (2019-09-02). "New taxonomic assignment for a dinosaur sauropod bone from Cuba". Historical Biology: 1–6. doi:10.1080/08912963.2019.1661406. ISSN 0891-2963.
- ^ Sierra Ancón at Fossilworks.org
- ^ Hoyo de San Antonio at Fossilworks.org
- ^ Hoyo de la Sierra at Fossilworks.org
- ^ a b c d Mogote La Mina at Fossilworks.org
- ^ Jagua Vieja at Fossilworks.org
- ^ Viñales at Fossilworks.org
Bibliography
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