G84-88LJ, Gannes 3: Ludfordian, Sweden
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Conodonta
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Silurognathus maximus
Jeppsson 2005
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| see common names | |||||||
Geography
| Country: | Sweden | State/province: | Gotland |
| Coordinates: | 57.4° North, 18.8° East (view map) | ||
| Paleocoordinates: | 16.4° South, 2.2° West | ||
| Basis of coordinate: | unpublished field data | ||
| Geographic resolution: | outcrop |
Time
| Period: | Silurian | Epoch: | Ludlow |
| Stage: | Ludfordian | 10 m.y. bin: | Silurian 2 |
| Key time interval: | Ludfordian | Conodont zone: | Polygnathoides siluricus |
| Age range of interval: | 425.60000 - 423.00000 m.y. ago |
Stratigraphy
| Geological group: | Hemse | Formation: | När | Member: | Millklint |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Hemse Beds, unit d. The taxon characteristic for subz. 2 of the P. siluricus Zone found from -0.2 m - +3.8 m, P. siluricus itself (very rare) at +3.6 -.8 m.
Sample collected at –0.2 m below the reference level. Reference level (Fredholm 1988): The extensive rippled surface (Sundquist 1982c) which forms the floor in the southeastern part of the quarry. | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Includes fossils? | Y |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,original phosphate |
| Size of fossils: | microfossils |
Collection methods and comments
| Collection excludes: | some microfossils |
| Collection methods: | acetic,sieve |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 184317 | ||
| Authorizer: | E. Jarochowska | Enterer: | E. Jarochowska | Research group: | micropaleontology,vertebrate |
| Created: | 2017-02-21 05:12:53 | Last modified: | 2017-02-21 05:12:53 |
| Access level: | group members | Released: | 2020-02-21 05:12:53 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 61607. | L. Jeppsson. 2005. Conodont-based revisions of the Late Ludfordian on Gotland, Sweden. Gff 127(4):273-282 [E. Jarochowska/E. Jarochowska] |