Ittiri, facies B: Middle Miocene, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
- Cassiduloidea
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Conolampas sp.
Agassiz 1883
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Echinoidea
- Clypeasteroida
- Clypeasteridae
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Clypeaster sp.
Lamarck 1801
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Echinoidea
- Spatangoida
- Schizasteridae
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Schizaster sp.
Agassiz 1835
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Bivalvia
- Pectinida
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Pectinida indet.
(Gray 1854)
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Thecostraca
- Balanomorpha
- Balanidae
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Balanidae indet.
Leach 1817
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| see common names | |||||||
Geography
| Country: | Italy | State/province: | Sardinia |
| Coordinates: | 40.6° North, 8.5° East (view map) | ||
| Paleocoordinates: | 42.5° North, 4.3° East | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Stratigraphy
| Formation: | Marne di Borutta | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: "The Ittiri Section (Fig. 3B) consists of approximately 5 m of sandy sediments within the Marne di Borutta Formation." | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: "Facies Ittiri-B is approximately 2.5 meters of well-sorted, calcareous, fine sandstone with very abundant fossil remains represented by the irregular echinoids Clypeaster, Schizaster, and Conolampas, as well as pectinids and reworked barnacles (Fig. 5A–D). The sediment is intensely bioturbated by cylindrical burrows up to 1 cm in diameter that can extend more than 20 cm vertically. When overlain by Facies Ittiri-C, contact is gradual." When underlain by Facies Ittiri-A, contact is sharp. | |
| Environment: | transition zone/lower shoreface |
| Geology comments: "moderate- to low-energy sublittoral environment" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | random |
| Fragmentation: | occasional |
| Bioerosion: | occasional |
| Encrustation: | occasional |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Only burrowing echinoids (mostly clypeasteroids) described. | |
Metadata
| Also known as: | Ittiri-B | ||
| Database number: | 187333 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
| Modifier: | P. Novack-Gottshall | Research group: | marine invertebrate |
| Created: | 2017-07-21 13:16:57 | Last modified: | 2017-07-21 14:32:01 |
| Access level: | the public | Released: | 2017-07-21 13:16:57 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 62845. | A. Mancosu and J. H. Nebelsick. 2015. The origin and paleoecology of clypeasteroid assemblages from different shelf settings of the Miocene of Sardinia, Italy. Palaios 30(5):373-387 [P. Novack-Gottshall/P. Novack-Gottshall] |