USGS D9719, Chesapeake and DE. Canal [Merchantville Fm]: Late/Upper Santonian, Delaware
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Diplomoceratidae
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Chesapeakella nodatum n. sp.
Kennedy and Cobban 1993
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| recombined as Chesapeakiceras nodatum | |||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites haresi
(Reeside 1927)
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Cephalopoda
- Ammonitida
- Collignoniceratidae
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Texanites (Texanites) sp.
Spath 1932
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Menabites (Delawarella) vanuxemi
(Morton 1830)
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Menabites (Delawarella) delawarensis
(Morton 1830)
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Cryptotexanites paedomorphicus n. sp.
Kennedy and Cobban 1993
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Submortoniceras punctatum
Collignon 1948
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Cephalopoda
- Ammonitida
- Placenticeratidae
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Placenticeras syrtale
(Morton 1834)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Delaware | County: | New Castle |
| Coordinates: | 39.5° North, 75.7° West (view map) | ||||
| Paleocoordinates: | 37.0° North, 43.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Late/Upper Santonian | ||
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Merchantville | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Merchantville Fm, which is overlain by the Englishtown Fm. AGE: Late Santonian, on the basis of ammonoid biostratigraphy. STRATIGRAPHIC POSITION: From lower part of formation. | |||||
Lithology and environment
| Primary lithology: | quartzose lithified silty sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Silty quartz sand. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collection method comments: COLLECTOR: Not stated in text. REPOSITORY: USNM. | |
| Taxonomic list comments:COVERAGE: Limited to ammonoids. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 88607 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2009-04-16 13:09:03 | Last modified: | 2016-12-03 10:45:09 |
| Access level: | the public | Released: | 2009-04-16 13:09:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 29725. | W. J. Kennedy and W. A. Cobban. 1993. Lower Campanian (Upper Cretaceous) ammonites from the Merchantville Formation of New Jersey, Maryland, and Delaware. Journal of Paleontology 67(5):828-849 [A. Hendy/A. Hendy] |