Aix-en-Provence (Inst. Geol. Nancy): Chattian, France
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta
- Hemiptera
- Aphrophoridae
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Aphrophora coquandi
Theobald 1937
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1 specimen | |||||||||
Inst. Geol. Nancy AN 6 | ||||||||||
Insecta
- Hemiptera
- Rhyparochromidae
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Aphanus murchisonae
(Heer 1853)
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3 specimens | |||||||||
Inst. Geol. Nancy AN 21-23 | ||||||||||
Insecta
- Hemiptera
- Berytidae
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Megalomerium serratum
Theobald 1937
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1 specimen | |||||||||
recombined as Metacanthus (Megalomerium) serratum | ||||||||||
F 220(257) | ||||||||||
Insecta
- Hemiptera
- Cydnidae
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Cydnus brevicollis
(Heer 1853)
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1 specimen | |||||||||
Cydnus meunieri
Theobald 1937
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1 specimen | |||||||||
Insecta
- Diptera
- Bibionidae
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Bibio curtisi
(Heer 1856)
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1 specimen | |||||||||
original and current combination Bibio curtisii | ||||||||||
Inst. Geol. Nancy AN 14 | ||||||||||
Bibio morio
Heer 1849
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1 specimen | |||||||||
recombined as Plecia morio | ||||||||||
Inst. Geol. Nancy AN 10 | ||||||||||
Plecia retracta
Theobald 1937
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1 specimen | |||||||||
nomen dubium belonging to Plecia | ||||||||||
Inst. Geol. Nancy AN 13 | ||||||||||
Plecia livida
(Heer 1849)
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2 specimens | |||||||||
Inst. Geol. Nancy AN 9, 19 | ||||||||||
Plecia constricta
Theobald 1937
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1 specimen | |||||||||
synonym of Plecia livida | ||||||||||
Inst. Geol. Nancy AN 1 | ||||||||||
Plecia brevipennis
(Heer 1856)
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1 specimen | |||||||||
synonym of Plecia livida | ||||||||||
Inst. Geol. Nancy AN 18 | ||||||||||
Plecia splendida
Theobald 1937
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1 specimen | |||||||||
synonym of Plecia foersteri | ||||||||||
Inst. Geol. Nancy AN 15 | ||||||||||
Plecia bucklandi
(Heer 1849)
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1 specimen | |||||||||
Inst. Geol. Nancy AN 12 | ||||||||||
Plecia cf. elegans
(Heer 1856)
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1 specimen | |||||||||
synonym of Plecia bucklandi | ||||||||||
Inst. Geol. Nancy AN 4(3) | ||||||||||
Plecia gracilis
(Heer 1856)
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1 specimen | |||||||||
synonym of Plecia bucklandi | ||||||||||
Inst. Geol. Nancy AN 2 | ||||||||||
Bibio detractus
Theobald 1937
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1 specimen | |||||||||
synonym of Plecia lygaeoides | ||||||||||
Inst. Geol. Nancy AN 8 | ||||||||||
see common names |
Geography
Country: | France | State/province: | Bouches-Du-Rhone |
Coordinates: | 43.5° North, 5.5° East (view map) | ||
Paleocoordinates: | 43.3° North, 2.8° East | ||
Basis of coordinate: | estimated from map | ||
Geographic resolution: | local area |
Time
Period: | Paleogene | Epoch: | Oligocene |
Stage: | Chattian | 10 m.y. bin: | Cenozoic 4 |
Key time interval: | Chattian | ||
Age range of interval: | 28.10000 - 23.03000 m.y. ago |
Stratigraphy
Formation: | Niveau du gypse d'Aix | ||||
Stratigraphy comments: "The ‘insect formation’ is 2.5 m thick, divided in two parts that correspond to two very different environmental conditions. The first (lower) episode is remarkable by its lateral mo- notony of facies on a distance of 6 km at least, in the outcrops observed on the northwest of Aix-en-Provence. This lower episode is distinguished from the rest of the ‘insect formation’ and from the whole formation of Aix-en-Provence by the presence of a very numerous thin limestone laminae. The second (upper) episode is remarkable by the presence of many silici- fied laminae. The fauna in this level is also very well preserved"….This collection consists of unspecified layers |
Lithology and environment
Primary lithology: | planar lamination lithified "limestone" | ||
Lithology description: The deposit presents an alternation of limestone and marls with gypsum. | |||
Environment: | lacustrine - large | Tectonic setting: | rift |
Geology comments: This lacustrine formation was deposited in a very large but shallow-water lake, with variable salinity and near the marine coast (Nury 1990, Nury & Thomassin 1994). Irregular basins formed during extension of the European platform in the Oligocene resulting from the formation of the West-European rift system. |
Taphonomy
Modes of preservation: | mold/impression,adpression |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Reason for describing collection: | taxonomic analysis |
Collection method comments: specimens in Inst. Geol. Nancy | |
Taxonomic list comments:"This formation has yielded a diverse flora and fauna, with finely preserved fossils. The flora is represented by numerous plant remains (pollen, roots, wood, stems, leaves, seeds and flowers). The fauna of vertebrates is represented by abundant fishes (GAUDANT 1978), and some frogs, birds, and bats with preserved skin outlines. Some invertebrates are perfectly preserved, including jellyfish and shells of aquatic molluscs with original colors and ornamentations (NEL et al. 1987). Aquatic and terrestrial arthropods (insects and arachnids) are very diverse and frequently well preserved….
In spite of this, aquatic insects remain comparatively rare among the 30,000 fossil insects one of us (A.N.) collected at the locality." |
Metadata
Database number: | 122509 | ||
Authorizer: | M. Clapham | Enterer: | J. Karr |
Modifier: | M. Clapham | Research group: | paleoentomology |
Created: | 2011-12-31 20:11:19 | Last modified: | 2014-08-24 11:06:24 |
Access level: | the public | Released: | 2013-12-31 20:11:19 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
38999. | N. Theobald. 1937. Les insectes fossiles des terrains oligocènes de France. Bulletin Mensuel (Mémoires) de la Société des Sciences de Nancy 1:1-473 [M. Clapham/J. Karr] |