CM-1-1 (Brazos River K-T boundary, TX): Late/Upper Maastrichtian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Epitoniidae
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Striaticostatum cf. bexarense
(Stephenson 1941)
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1 specimen | |||||||||
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Bellifusus sp.
Stephenson 1941
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3 specimens | |||||||||
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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1 specimen | |||||||||
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Gastropoda
- Neotaenioglossa
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Neotaenioglossa indet.
Haller 1882
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2 specimens | |||||||||
| Anchura or amuletum | ||||||||||
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Gastropoda
- Heterostropha
- Ringiculidae
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Ringicula sp.
Deshayes 1838
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1 specimen | |||||||||
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Cephalopoda
- Ammonitida
- Sphenodiscidae
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Sphenodiscus ? sp.
Meek 1871
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4 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites sp.
Lamarck 1799
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13 specimens | |||||||||
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium leve
Stephenson 1923
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1 specimen | |||||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte aff. culebrensis
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1 specimen | |||||||||
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Bivalvia
- Poromyida
- Cuspidariidae
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Cuspidaria grovensis
Stephenson 1941
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3 specimens | |||||||||
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Bivalvia
- Cardiida
- Tellinidae
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Tellina sp. n. sp.
Linnaeus 1758
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1 specimen | |||||||||
| Tellina n sp. aff. munda | ||||||||||
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Bivalvia
- Cardiida
- Mactridae
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Cymbophora cancellosa
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5 specimens | |||||||||
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Cymbophora ? subtilis
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1 specimen | |||||||||
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Cymbophora sp.
Gabb 1869
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2 specimens | |||||||||
| includes: C. sp. a (round)(10), C. sp. b (smooth)(1) | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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Veneridae indet.
Rafinesque 1815
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3 specimens | |||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula aff. torta
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3 specimens | |||||||||
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Corbula linteroidea
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1 specimen | |||||||||
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Corbula ? williardi
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2 specimens | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Phacoides aff. mattiformis
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2 specimens | |||||||||
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Bivalvia
- Mytilida
- Mytilidae
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Dreissena tippana
Conrad 1858
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2 specimens | |||||||||
| recombined as Cuneolus tippana | ||||||||||
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Bivalvia
- Mytilida
- Crenellidae
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Crenella aff. serica
Conrad 1860
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5 specimens | |||||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Idonearca sp.
Conrad 1862
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2 specimens | |||||||||
| spelled with current rank as Cucullaea (Idonearca) | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Striarca webbervillensis
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11 specimens | |||||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Gervillia ensiformis
Conrad 1858
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1 specimen | |||||||||
| recombined as Gervilliopsis ensiformis | ||||||||||
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Bivalvia
- Ostreida
- Pteriidae
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Phelopteria sp.
Stephenson 1953
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1 specimen | |||||||||
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Bivalvia
- Ostreida
- Pinnidae
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Pinna sp.
Linnaeus 1758
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2 specimens | |||||||||
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Bivalvia
- Ostreida
- Flemingostreidae
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Cubitostrea tecticosta
(Gabb 1860)
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3 specimens | |||||||||
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Agerostrea falcata
(Morton 1827)
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1 specimen | |||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Pycnodonte sp.
(Fischer von Waldheim 1835)
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2 specimens | |||||||||
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Gryphaeostrea sp.
Conrad 1865
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2 specimens | |||||||||
| Gryphaeostrea sp. aff. vomer | ||||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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12 specimens | |||||||||
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Ostrea aff. congesta
Conrad 1843
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6 specimens | |||||||||
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Bivalvia
- Pectinida
- Entoliidae
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Entolium sp. n. sp.
(Meek 1865)
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1 specimen | |||||||||
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Syncyclonema sp.
Meek 1864
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1 specimen | |||||||||
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Bivalvia
- Pectinida
- Anomiidae
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Anomia sp.
Linnaeus 1758
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1 specimen | |||||||||
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Anomia argentaria
Morton 1833
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1 specimen | |||||||||
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana corsicana
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2 specimens | |||||||||
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Nuculana sp.
Link 1807
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10 specimens | |||||||||
| includes: N. sp. b (3), N. sp. d (2), N. sp. e (1), and N. sp. (4) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Falls |
| Coordinates: | 31.3° North, 96.9° West (view map) | ||||
| Paleocoordinates: | 36.6° North, 75.4° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 | *Epoch: | Senonian |
| *International age/stage: | Late/Upper Maastrichtian | ||
| Key time interval: | Late/Upper Maastrichtian | Nannofossil zone: | Prediscosphaera quadripunctata |
| Age range of interval: | 72.10000 - 66.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Corsicana Marl | ||||
| Stratigraphy comments: Discoscaphites iris ammonoid zone - Landman et al., 2004 |
Lithology and environment
| Primary lithology: | shelly/skeletal,gray unlithified claystone |
| Includes fossils? | Y |
| Lithology description: fossiliferous clay (described as a massive gray claystone with evenly dispersed shells in hansen et al. 1987) | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,mechanical,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 5554 | ||
| Authorizer: | A. Miller | Enterer: | K. Layou |
| Modifier: | P. Wagner | Research group: | GCP,marine invertebrate |
| Created: | 1999-10-13 11:31:02 | Last modified: | 2019-02-21 22:53:14 |
| Access level: | the public | Released: | 1999-10-13 11:31:02 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 333. | T. A. Hansen, B. Upshaw, E. G. Kauffman and W. Gose. 1993. Patterns of molluscan extinction and recovery across the Cretaceous-Tertiary boundary in east Texas; report on new outcrops. Cretaceous Research 14:685-706 [A. Miller/K. Layou/M. Uhen] |
Secondary references:
| 29915 | J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa] | |
| 28506 | J. A. Sessa, M. E. Patzkowsky, and T. J. Bralower. 2009. Impact of lithification on the diversity, size distribution, and recovery dynamics of marine invertebrate assemblages. Geology 37(2):115-118 [M. Patzkowsky/J. Sessa/J. Sessa] |