Kiln Point, Lambay Island: Katian - Hirnantian, Ireland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Orthocerida
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Orthocerida indet.
Kuhn 1940
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1 specimen | |||||||||
| GSI F08563; referred to as "Orthocerida fam. and gen. indet. pictum (Blake)" in the reference; figured as "Orthoceras pictum" in Blake (1882, A monograph of the British fossil Cephalopoda, fig. 5a, non 5b) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Ireland | State/province: | Leinster | County: | Fingal (former northern part of County Dublin) |
| Coordinates: | 53.5° North, 6.0° West (view map) | ||||
| Paleocoordinates: | 41.7° South, 19.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 5 | ||
| Key time interval: | Katian - Hirnantian | Conodont zone: | A. superbus - A. ordovicius |
| Age range of interval: | 453.00000 - 443.80000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: There is no(?) lithostratigraphic framework for the Ordovician limestones on Lambay Island thus far. At least all these rocks are said to range from Llanvirn to Ashgill in age (Rayner, 1967, The stratigraphy of the British Isles) or to include the Amorphognathus superbus and A. ordovicius conodont biozones (Harper & Parkes, 2000, Geol. Soc. Spec. Rep. 24), the latter implying an Upper Katian to Hirnantian age (see "Geological Time Scales" 2004, 2008, Gradstein et al., Ogg et al., respectively). | |||||
Lithology and environment
| Primary lithology: | tuffaceous conglomeratic "limestone" |
| Includes fossils? | Y |
| Lithology description: " [...] limestone containing numerous lithic clasts consisting of limestone (some veined), greenish tuffs and feldspar fragments. The rock is poorly sorted and no consistent fabrics are visible." | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,recrystallized |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: GSI = Geological Survey of Ireland | |
Metadata
| Database number: | 89144 | ||
| Authorizer: | B. Kröger | Enterer: | T. Liebrecht |
| Modifier: | T. Liebrecht | Research group: | marine invertebrate |
| Subset of collection #: | 55702 | ||
| Created: | 2009-05-06 16:22:22 | Last modified: | 2009-05-14 18:29:17 |
| Access level: | the public | Released: | 2009-05-06 16:22:22 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 29904. | D. H. Evans. 2002. Some Additional Ordovician and Silurian Cephalopods from Ireland. In P. N. Wyse Jackson, M. A. Parkes and R. Wood (eds.), Studies in Palaeozoic palaeontology and biostratigraphy in honour of Charles Hepworth Holland. Special Papers in Paleontology 67:77-96 [B. Kröger/T. Liebrecht] |