Yumurí Gorge near Matanzas: Langhian, Cuba
collected by Pedro J. Bermudez
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Nautilida
- Aturiidae
|
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| see common names | |||||||
Geography
| Country: | Cuba |
| Coordinates: | 23.1° North, 81.6° West (view map) |
| Paleocoordinates: | 25.1° North, 76.1° West (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Langhian | ||
| Age range of interval: | 15.98 - 13.82 m.y. ago |
Stratigraphy
| Formation: | Güines | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Brönniman & Rigasi (1963) placed the underlying Cojimar Formation in the Globorotalia fohsi zone (=N9-N12 in its broad sense, mid Langhian-Serravallian, or N10 for the Globorotalia fohsi fohsi zone, upper Langhian) on the basis of extensive planktonic foraminiferal sampling, and assigned the Güines Formation to the Globorotalia mayeri zone (=N14, or earliest Tortonian), although they only had samples from presumed time-equivalent beds. In the type area of the Güines Formation, Albear et al. (1992) found Orbulina bilobata and Praeorbulina glomerosa are one locality, indicating upper Burdigalian, and Globigerinoides with various species of Praeorbulina and Orbulina at another, characteristic of early middle Miocene N9 (Langhian) of Banner & Blow (1965, 1969). The formation is sometimes Burdigalian-middle Miocene, or sometimes only middle Miocene (Iturralde-Vinent, 1969); because it overlies the Cojimar Formation in Yumarí Gorge (unlike in some other places), it may only be middle Miocene here and a Langhian age is tentatively assigned. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal,white lithified "limestone" |
| Lithology description: Recrystallized and dissolved, but some molluskan coquinas can be observed as molds | |
| Environment: | open shallow subtidal |
| Geology comments: Possibly deposited at littoral/neritic depths, less than 100 m, according to Iturralde-Vinent (1969). Because of the presence of corals and larger foraminifera, a shallow subtidal environment is most likely. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Pedro J. Bermudez |
| Collection method comments: Repository: private collection of Pedro J. Bermudez | |
Metadata
| Database number: | 180409 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2016-07-16 00:17:00 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2016-07-16 00:17:00 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 59868. | A. K. Miller and H. R. Downs. 1950. Tertiary nautiloids of the Americas: supplement. Journal of Paleontology 24:1-18 [M. Clapham/M. Clapham] |