Pterosaur, Huizachal Canyon: Pliensbachian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Pterosauria
- Dimorphodontidae
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Pterosauria indet.
(Kaup 1834)
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1 individual | |||||||||
| "new species" | ||||||||||
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= Dimorphodon weintraubi n. sp.
Clark et al. 1998
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Clark et al. 1998 | |||||||||
| IGM 3494, an articulated partial skeleton including the posterior part of the skull and first four cervical vertebrae, left and right scapulocoracoids, left humerus, second phalanx of left wing finger, right wing distal to mid-humerus, and right leg distal to mid-tibiotarsus | ||||||||||
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Reptilia
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| Reynoso and Cruz 2014 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Tamaulipas |
| Coordinates: | 26.6° North, 99.5° West (view map) | ||
| Paleocoordinates: | |||
| Basis of coordinate: | based on nearby landmark | ||
| Altitude: | 146 meters | ||
| Geographic resolution: | local area |
Time
| Period: | Jurassic | Epoch: | Early Jurassic |
| Stage: | Pliensbachian | 10 m.y. bin: | Jurassic 2 |
| Key time interval: | Pliensbachian | ||
| Age range of interval: | 192.9 - 184.2 m.y. ago | ||
| Age estimate: | maximum 189 ± 0.2 Ma (U/Pb) |
Stratigraphy
| Geological group: | Huizachal | Formation: | La Boca | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: lower part of the La Boca Formation; originally dated as Middle Jurassic, but U-Pb isotopic data from zircon in a volcaniclastic rock from the lowest part of the formation yields an age of 189 plus/minus 0.2 Ma. The fossil-bearing sedimentary rocks are above this unit and conformable with it (see Montellano et al. 2008). | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | "floodplain" |
| Geology comments: "deposited as a subaerial, waterlain debris flow" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Disassociated major elements: | none |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: IGM: Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Mexico | |
Metadata
| Database number: | 226360 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2022-07-01 11:42:08 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2022-07-01 11:42:08 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 43803. | J. M. Clark, M. Montellano, J. A. Hopson, R. Hernandez, and D. E. Fastovsky. 1994. An Early or Middle Jurassic tetrapod assemblage from the La Boca Formation, northeastern Mexico. In N. C. Fraser, H.-D. Sues (eds.), In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods 295-302 [R. Butler/R. Butler/R. Butler] |
Secondary references:
| 7715 | J. M. Clark, J. A. Hopson, R. R. Hernández, D. E. Fastovsky, and M. Montellano. 1998. Foot posture in a primitive pterosaur. Nature 391:886-889 [M. Carrano/M. Carrano/J. Alroy] | |
| 82054 | E. Frey and W. Stinnesbeck. 2014. Mexican pterosaurs—rare jewels in the fossil record. In H. E. Rivera-Sylva, K. Carpenter, & E. Frey (eds.), Dinosaurs and Other Reptiles from the Mesozoic of Mexico 126-142 [M. Carrano/M. Carrano] | |
| 82053 | V. H. Reynoso and J. A. Cruz. 2014. Mesozoic lepidosauromorphs of Mexico: a review and discussion of taxonomic assignments. In H. E. Rivera-Sylva, K. Carpenter, & E. Frey (eds.), Dinosaurs and Other Reptiles from the Mesozoic of Mexico 44-78 [M. Carrano/M. Carrano] |