Keerimalai [Jaffna Limestone]: Burdigalian, Sri Lanka
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Arcidae
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Anadara peethensis
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys senatoria
(Gmelin 1791)
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| recombined as Mimachlamys senatoria | ||||||||||
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus aff. tallavignesi
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Bivalvia
- Cardiida
- Cardiidae
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? Discors triforme
(Sowerby 1840)
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Gastropoda
- Trochidae
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Tectus loryi
(d'Archaic and Haime 1853)
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Gastropoda
- Cerithiidae
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Ptychocerithium archiaci
Vredenburg 1928
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| SUBSPECIES: Ptychocerithium archiaci pseudocorrugatum | ||||||||||
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Gastropoda
- Naticidae
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Natica rostalina
Jenkins 1864
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Gastropoda
- Cypraeidae
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Calliostocypraea (Miolyncina) prunum
(Sowerby 1839)
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Gastropoda
- Neogastropoda
- Olivellidae
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Olivancillaria (Anazola) nebulosa
(Lamarck 1822)
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= Agaronia pupa
Sowerby 1840
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Harzhauser et al. 2009 | |||||||||
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Gastropoda
- Neogastropoda
- Conidae
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Conus (Lithoconus) subbrevis
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Conus (Lithoconus) litteratus
(Linnaeus 1758)
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Gastropoda
- Cassidae
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Phalium (Semicassis) booleyi
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| original and current combination Semicassis | ||||||||||
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Gastropoda
- Xenophoridae
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Xenophora sp.
Fischer von Waldheim 1807
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Gastropoda
- Ampullinidae
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Euspirocrommium oweni
(d'Archiac and Haime 1854)
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| recombined as Pachycrommium oweni | ||||||||||
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Nummulitidae
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Spiroclypeus cf. pleurocentralis
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Tubothalamea
- Miliolida
- Miliolidae
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Miliolidae indet.
Ehrenberg 1839
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Tubothalamea
- Miliolida
- Alveolinidae
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Alveolinella (Flosculinella) sp.
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Tubothalamea
- Miliolida
- Soritidae
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Taberina malabarcia
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Florideophyceae
- Hapalidiales
- Lithothamniacae
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Lithothamnium sp.
Philippi
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| replaced by Lithothamnion | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Sri Lanka |
| Coordinates: | 9.8° North, 80.0° East (view map) |
| Paleocoordinates: | 9.8° North, 80.0° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Burdigalian | ||
| Age range of interval: | 20.44000 - 15.98000 m.y. ago |
Stratigraphy
| Formation: | Jaffna Limestone | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Jaffna Limestone, which unconformably overlies Precambrian basement, and is unconformably overlain by recent sand dunes and coral reefs, and Quaternary red earth. AGE: late Early Miocene (Burdigalian) on the basis of foraminifera. STRATIGRAPHIC POSITION: From unknown position within formation. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal,white,yellow lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Hard, partly crystalline, compact, indistinctly bedded creamy coloured rock. Massive in parts but some layers are richly fossiliferous. LITHIFICATION: Lithified, based on facies description. | |
| Environment: | shallow subtidal indet. |
| Geology comments: ENVIRONMENT: Shallow marine, carbonate facies, probably adjacent to coral reef environments. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: COLLECTOR: Unknown collector. REPOSITORY: Unknown repository, possibly Geological Survey Department, Sri Lanka or the National Museum of Sri Lanka. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda, bivalvia, foraminifera, and anthozoa. NOMENCLATURE: Not an authoritative publication, but with relatively modern nomenclature, and subgenus and species-resolution assignments. | |
Metadata
| Database number: | 77475 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-01-13 16:45:20 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2009-01-13 16:45:20 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26213. | P. G. Cooray. 1984. An Introduction to the Geology of Sri Lanka (Ceylon) 1-340 [A. Hendy/A. Hendy] |
Secondary references:
| 36478 | M. Harzhauser, M. Euter, W. E. Piller, B. Berning, A. Kroh and O. Mandic. 2009. Oligocene and Early Miocene gastropods from Kutch (NW India) document an early biogeographic switch from Western Tethys to Indo-Pacific. Palaeontologische Zeitschrift 83:333-372 [A. Hendy/A. Hendy] |