Union y Progreso: Early/Lower Campanian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Phylloceratida
- Phylloceratidae
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Hypophylloceras (Neophylloceras) arturoi n. sp.
Ifrim et al. 2013
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1 specimen | |||||||||
| (1 measurement) | ||||||||||
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Cephalopoda
- Ammonitida
- Tetragonitidae
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Tetragonites silencioensis n. sp.
Ifrim et al. 2013
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1 specimen | |||||||||
| (1 measurement) | ||||||||||
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Cephalopoda
- Ammonitida
- Collignoniceratidae
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Menabites (Delawarella) vanuxemi
(Morton 1830)
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2 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Desmoceratidae
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Desmophyllites diphylloides
(Forbes 1846)
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5 specimens | |||||||||
| (5 measurements) | ||||||||||
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Cephalopoda
- Ammonitida
- Pachydiscidae
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Menuites sp.
Spath 1922
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4 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Muniericeratidae
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Pseudoschloenbachia (Pseudoschloenbachia) mexicana
(Renz 1936)
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26 specimens | |||||||||
| (8 measurements) | ||||||||||
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Pseudoschloenbachia (Pseudoschloenbachia) aff. mexicana
(Renz 1936)
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26 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Scaphitidae
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Scaphites ex gr. hippocrepis
(DeKay 1828)
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35 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Nostoceratidae
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Nostoceratidae indet.
Hyatt 1894
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3 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Diplomoceratidae
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Polyptychoceras sp.
Yabe 1927
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2 specimens | |||||||||
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Pseudoxybeloceras (Parasolenoceras) sp.
(Collignon 1969)
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6 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites sp.
Lamarck 1799
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51 specimens | |||||||||
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Baculites haresi
(Reeside 1927)
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41 specimens | |||||||||
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Cephalopoda
- Nautilida
- Nautilidae
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Eutrephoceras irritilasi n. sp.
Ifrim et al. 2013
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4 specimens | |||||||||
| (3 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Coahuila |
| Coordinates: | 26.8° North, 103.2° West (view map) | ||
| Paleocoordinates: | 33.3° North, 77.4° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Early/Lower Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Formation: | Parras | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Collected directly from surface exposures where they form part of the desert pavement after they weather out of the Parras Shale. Menabites (Delawarella) vanuxemi (Morton, 1830) represents the upper lower Campanian along the Gulf/Atlantic Coastal plain(s) where it co-occurs with Menabites (Delawarella) delawarensis (Young, 1963; Cobban and Kennedy, 1992b). This latter species is an index fossil for the upper lower Campanian in North America (Kennedy et al., 1992). The subgenus Menabites (Delawarella) is a zonal index for the upper lower Campanian in the Gulf/Atlantic Coastal plains. | |||||
Lithology and environment
| Primary lithology: | lithified "shale" |
| Lithology description: Fine-grained siliciclastics, predominantly shale | |
| Environment: | prodelta |
Taphonomy
| Modes of preservation: | mold/impression,replaced with pyrite,replaced with limonite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Coleccion de Paleontologia de Coahuila (CPC) at the Museo del Desierto, Saltillo, Coahuila, Mexico | |
Metadata
| Database number: | 171307 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2015-07-05 20:30:16 | Last modified: | 2015-07-05 20:30:16 |
| Access level: | the public | Released: | 2015-07-05 20:30:16 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 55715. | C. Ifrim, W. Stinnesbeck, and J. F. Ventura. 2013. An endemic cephalopod assemblage from the Lower Campanian (Late Cretaceous) Parras Shale, western Coahuila, Mexico. Journal of Paleontology 87:881-901 [M. Clapham/M. Clapham/O. Alfaro] |