Echinoderms, Angulatus zone, Hettangian, Schaffhausen, Hallau: Early/Lower Hettangian, Switzerland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Ostracoda
- Podocopida
- Bairdiidae
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Bairdia amalthei
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Asteroidea
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Plesiastropecten hallovensis n. sp.
Peyer 1944
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1 specimen | |||||||||
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Ophiuroidea
- Amphilepidida
- Ophiolepididae
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Aplocoma brevispina n. sp.
Hess 1985
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Hess 1985 | 25 specimens | ||||||||
| about 25 complete individuals | ||||||||||
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Crinoidea
- Isocrinida
- Isocrinidae
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Chladocrinus angulatus
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Hess 1985 | 3 specimens | ||||||||
| 3 fragments | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Switzerland | County: | Schaffhausen |
| Coordinates: | 47.7° North, 8.5° East (view map) | ||
| Paleocoordinates: | 36.8° North, 11.3° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | hand sample |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Hettangian | 10 m.y. bin: | Jurassic 1 |
| *Period: | Early/Lower Jurassic - Early/Lower Jurassic | ||
| *International age/stage: | Hettangian - Hettangian | ||
| Key time interval: | Early/Lower Hettangian | Zone: | liasicus |
| Age range of interval: | 201.40000 - 199.50000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Local section: | Hallau | Local bed: | Psilonotenbank | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Angulatus zone | |||||
Lithology and environment
| Primary lithology: | green poorly lithified claystone | ||
| Secondary lithology: | poorly lithified calcareous sandstone | ||
| Includes fossils? | Y | ||
| Environment: | offshore | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | body,recrystallized,replaced with calcite,replaced with pyrite |
| Size of fossils: | macrofossils,mesofossils |
| Articulated whole bodies: | some |
| Associated major elements: | some |
| Disassociated minor elements: | some |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 32019 | ||
| Authorizer: | L. Villier | Enterer: | L. Villier |
| Modifier: | L. Villier | Research group: | marine invertebrate |
| Created: | 2003-06-01 05:44:44 | Last modified: | 2006-02-14 10:39:27 |
| Access level: | the public | Released: | 2003-06-01 05:44:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 16625. | B. Peyer. 1944. Beiträge zur Kenntnis von Rhät und Lias [Contributions to knowledge of the Rhaetian and Lias]. Eclogae Geologicae Helvetiae 36(7):303-326 [L. Villier/L. Villier/M. Carrano] |
Secondary references:
| 8590 | H. Hess. 1985. Schlangensterne und Seelilien aus dem unteren Lias von Hallau (Kanton Schaffausen). Mitteilungen der Naturforschenden Gesellschaft Schaffhausen 33:1-15 [L. Villier/L. Villier/L. Villier] |