CSUN Loc. 1470 [Bateque Fm]: Ypresian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Echinoidea
- Clypeasteroida
- Oligopygidae
|
||||||||||
|
Haimea bajasurensis n. sp.
Squires and Demetrion 1994
|
Squires and Demetrion 1994 | |||||||||
|
Echinoidea
- Echinolampadoida
- Echinolampadidae
|
||||||||||
|
Echinolampas ? sp.
Gray 1825
|
||||||||||
| both Echinolampas sp. a and Echinolampas sp. b | ||||||||||
|
Echinoidea
- Spatangoida
- Schizasteridae
|
||||||||||
|
Schizaster sp.
Agassiz 1835
|
||||||||||
| schizaster sp. aff. S. lecontei | ||||||||||
|
Echinoidea
- Spatangoida
- Brissidae
|
||||||||||
|
Eupatagus batequensis n. sp.
Squires and Demetrion 1992
|
||||||||||
|
Polychaeta
- Sabellida
- Serpulidae
|
||||||||||
|
Serpula batequensis n. sp.
Squires and Demetrion 1992
|
||||||||||
|
Bivalvia
- Ostreida
- Gryphaeidae
|
||||||||||
|
Pycnodonte bajaensis
Squires and Demetrion 1990
|
||||||||||
|
Pycnodonte pacifica
Squires and Demetrion 1990
|
||||||||||
| recombined as Phygraea pacifica | ||||||||||
|
Bivalvia
- Ostreida
- Pinnidae
|
||||||||||
|
Pinna llajasensis
Squires 1983
|
||||||||||
| collected as float | ||||||||||
|
Bivalvia
- Cardiida
- Veneridae
|
||||||||||
|
Pitar joaquinensis
Vokes 1939
|
||||||||||
|
Bivalvia
- Solenida
- Solenidae
|
||||||||||
|
Solena novacularis
Anderson and Hanna 1925
|
||||||||||
| recombined as Solena (Eosolen) novacularis | ||||||||||
|
Gastropoda
- Opisthobranchia
- Cylichnidae
|
||||||||||
|
Scaphander ? sp.
Monfort 1810
|
||||||||||
|
Gastropoda
- Opisthobranchia
- Retusidae
|
||||||||||
|
Cylichnina tantilla
(Anderson and Hanna 1925)
|
||||||||||
|
Gastropoda
- Neritidae
|
||||||||||
|
Velates perversus
(Gmelin 1791)
|
||||||||||
|
Gastropoda
- Turritellidae
|
||||||||||
|
Turritella uvasana
Conrad 1855
|
||||||||||
| s.s. | ||||||||||
|
Gastropoda
- Naticidae
|
||||||||||
|
Gyrodes ? sp.
Conrad 1860
|
||||||||||
|
Gastropoda
- Neogastropoda
- Fasciolariidae
|
||||||||||
|
Clavilithes tabulatus
(Dickerson 1913)
|
||||||||||
|
Gastropoda
- Neogastropoda
- Olividae
|
||||||||||
|
? Olivella mathewsonii
Gabb 1864
|
||||||||||
|
Gastropoda
- Neogastropoda
- Volutidae
|
||||||||||
|
Lyrischapa lajollaensis
(Hanna 1927)
|
||||||||||
|
Gastropoda
- Seraphsidae
|
||||||||||
|
Paraseraphs erraticus
(Cooper 1894)
|
||||||||||
|
Gastropoda
- Strombidae
|
||||||||||
|
Platyoptera pacifica
Squires and Demetrion 1990
|
||||||||||
| ? in locality data | ||||||||||
|
Rimella supraplicata
(Gabb 1864)
|
Squires 2013 | |||||||||
|
Ectinochilus sp.
Cossmann 1889
|
||||||||||
| synonym of Rimella | ||||||||||
| Ectinochilus sp. cf. E. macilentus | ||||||||||
|
Gastropoda
- Cassidae
|
||||||||||
|
Galeodea sp.
Link 1807
|
||||||||||
|
Gastropoda
- Cymatiidae
|
||||||||||
|
Olequahia domenginica
(Vokes 1939)
|
||||||||||
| original and current combination Ranella domenginica | ||||||||||
|
Asterocyclinidae
|
||||||||||
|
Pseudophragmina clarki
(Cushman 1920)
|
||||||||||
| ? in locality data | ||||||||||
|
Chlorophyceae
- Dasycladales
- Dasycladaceae
|
||||||||||
|
Dasycladaceae indet.
Kutzing 1843
|
||||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Baja California |
| Coordinates: | 26.5° North, 112.7° West (view map) | ||
| Paleocoordinates: | 28.7° North, 96.2° West | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| *Period: | Tertiary | *Local age/stage: | Capay |
| Key time interval: | Ypresian | ||
| Age range of interval: | 56.00000 - 47.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Bateque | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: This collection is from section 2 of the author's four section division of the formation. | |||||
Lithology and environment
| Primary lithology: | planar lamination,bioturbation,shelly/skeletal,yellow poorly lithified sandstone |
| Secondary lithology: | lithified "limestone" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: 90 m thick shallow-marine deposits that...consist of bioturbated and parallel-laminated, yellow, very fine-grained sandstone (75%) with many interbedded lenses (25%) filled with abundant macrofossils. lenses are described as poorly sorted coquinas. | |
| Environment: | transition zone/lower shoreface |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | LACM |
Metadata
| Database number: | 5506 | ||
| Authorizer: | A. Miller, J. Alroy, M. Uhen | Enterer: | K. Layou, A. Doyle, M. Uhen |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 1999-10-08 08:50:53 | Last modified: | 2019-05-24 11:44:14 |
| Access level: | the public | Released: | 1999-10-08 08:50:53 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 322. | R. L. Squires and R. A. Demetrion. 1992. Paleontology of the Eocene Bateque Formation, Baja California Sur, Mexico. Contributions in Science (Natural History Museum of Los Angeles County) 434:1-55 [A. Miller/K. Layou] |
Secondary references:
| 49270 | R. L. Squires. 2013. West Coast North America record of the Paleogene marine stromboid gastropod Rimella and paleobiogeography of the genus. Journal of Paleontology 87(5):826-841 [M. Uhen/S. Alam/M. Uhen] | |
| 38764 | R. L. Squires and R. A. Demetrion. 1994. A New Species of the Oligopygoid Echinoid Haimea from the Lower Eocene of Baja California Sur, Mexico. Journal of Paleontology 68(4):846-851 [J. Alroy/A. Doyle/M. Uhen] |