| 释义 |
- Fossil content Crurotarsans Dinosaurs
- See also
- References Bibliography
{{Infobox rockunit
| name = Cerro Barcino Formation
| image =
| caption =
| type = Geological formation
| age = Hauterivian-Albian
~{{fossil range|130|100}}
| period = Aptian
| prilithology = Mudstone, sandstone
| otherlithology = Conglomerate, tuff
| namedfor = Cerro Barcino
| namedby =
| region = Chubut Province
| country = {{ARG}}
| coordinates = {{coord|43.8|S|68.6|W|display=inline,title}}
| paleocoordinates = {{coord|44.7|S|35.1|W|display=inline}}
| unitof = Chubut Group
| subunits = Puesto Manuel Arce
Bayo Overo
Las Plumas
Cerro Castaño
La Paloma
| underlies = La Colonia, Paso del Sapo & Lefipán Formations
| overlies = Los Adobes Formation
| thickness =
| extent = Cañadón Asfalto Basin
| area =
| map = {{Location map+ | Argentina
| relief = 1
| width = 250
| float = center
| places =
| lat_deg = -43.8
| lon_deg = -68.6
| mark = Green pog.svg
| marksize = 12
}}
| map_caption =
}}The Cerro Barcino Formation (also known as the Gorro Frigio Formation) is a geological formation in South America whose strata span the Early Cretaceous. The top age for the formation has been estimated to be Albian.[1] Earlier estimates placed the formation until the Campanian.[2] The formation was deposited in the Cañadón Asfalto Basin, a rift basin that started forming in the earliest Jurassic.[2] Dinosaur remains are among the fossils that have been recovered from the formation.[3] The Cerro Barcino Formation is the second-youngest unit of the Chubut Group, which also includes the older Los Adobes Formation. Both formations cover a vast area in Chubut Province, Argentina. The two formations are distinguished by geological features suggesting a distinct change in climate, from a wetter, flood plain environment in the Los Adobes to a much more arid, desert-like environment in the Cerro Barcino.[4] The Cerro Barcino Formation is subdivided into several subunits (members).[4] From oldest to youngest: - La Paloma
- Characterized by arid plains interspersed with sand dunes
- Cerro Castaño
- A return to more humid, flood-plain conditions
- Las Plumas
- Bayo Overo
- Puesto Manuel Arce
The final three members were estimated to range from Albian to Campanian age (112 to 83 million years ago), while the La Paloma dates to the latest Hauterivian (130 Ma).[4] Fossil content Indeterminate abelisaurid remains.[3] Possible indeterminate carcharodontosaurid remains.[3] Indeterminate Titanosauria remains.[3] Also, an unnamed titanosauriform.[3] Crurotarsans {{Paleobiota-key-compact}}| Crocodylomorphs of the Cerro Barcino Formation |
|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|
| Barcinosuchus[5] | B. gradilis | Near El Escorial village, Chubut Province | Cerro Castaño Member | "Skull, mandible, and postcranial remains." | A peirosaurid. The first crocodyliform from the Chubut Group | |
Dinosaurs | Dinosaurs of the Cerro Barcino Formation |
|---|
| Genus | Species | Member | Material | Notes | Images |
|---|
| Chubutisaurus | C. insignis | date=October 2009}} | "[Two] partial skeletons including most limb elements and caudal vertebrae."[6] | A titanosaur.[3] | | Genyodectes | G. serus | Cerro Castaño[7] | "Premaxillae, partial dentaries."[8] | A possible ceratosaurid | | Patagotitan | P. mayorum | | Tyrannotitan | T. chubutensis | Cerro Castaño | A carcharodontosaurid[9] | | "Megalosaurus" | "Megalosaurus" inexpectatus | Indeterminate remains originally described as a species of Megalosaurus[3] | |
See also {{Portal|Earth sciences|Paleontology|Dinosaurs|Cretaceous|Prehistory of South America}}- List of dinosaur-bearing rock formations
- La Amarga Formation, contemporaneous fossiliferous formation of the Neuquén Basin
- Lohan Cura Formation, contemporaneous fossiliferous formation of the Neuquén Basin
- Río Belgrano Formation, contemporaneous fossiliferous formation of the Austral Basin
{{clearboth}} References 1. ^Figari et al., 2015, p.153
2. ^Figari et al., 2015, p.142
3. ^1 2 3 4 5 6 Weishampel et al., 2004, pp.563-570
4. ^1 2 3 Rauhut et al., 2003
5. ^Leardi & Pol, 2009
6. ^"Table 13.1," in Weishampel et al., 2004, p.268
7. ^Rauhut, 2004
8. ^"Table 3.1," in Weishampel et al., 2004, p.50
9. ^Novas et al., 2005
Bibliography - {{cite LSA |last=Figari |first=Eduardo G. |last2=Scasso |first2=Roberto A. |last3=Cúneo |first3=Rubén N. |last4=Escapa |first4=Ignacio |year=2015 |title=Estratigrafía y evolución geológica de la Cuenca de Cañadón Asfalto, Provincia del Chubut, Argentina |url=http://www.redalyc.org/pdf/3817/381744779003.pdf |journal=Latin American Journal of Sedimentology and Basin Analysis |volume=22 |pages=135–169 |accessdate=2018-09-10}}
- {{cite LSA |last=Leardi |first=Juan Martín |last2=Pol |first2=Diego |year=2009 |title=The first crocodyliform from the Chubut Group (Chubut Province, Argentina) and its phylogenetic position within basal Mesoeucrocodylia |url=https://www.researchgate.net/publication/229135423_The_first_crocodyliform_from_the_Chubut_Group_Chubut_Province_Argentina_and_its_phylogenetic_position_within_basal_Mesoeucrocodylia |journal=Cretaceous Research |volume=30 |issue=6 |pages=1376–1386 |accessdate=2019-04-06}}{{doi|10.1016/j.cretres.2009.08.002}}
- {{cite LSA |last=Novas |first=F.E. |last2=De Valais |first2=S. |last3=Vickers-Rich |first3=P. |last4=Rich |first4=T. |year=2005 |title=A large Cretaceous theropod from Patagonia, Argentina, and the evolution of carcharodontosaurids |url=https://www.researchgate.net/publication/7901883_A_large_Cretaceous_theropod_from_Patagonia_Argentina_and_the_evolution_of_carcharodontosaurids |journal=Naturwissenschaften |volume=92 |issue=5 |pages=226–230 |accessdate=2019-04-06}}{{doi|10.1007/s00114-005-0623-3}}{{pmid|15834691}}{{bibcode|2005NW.....92..226N}}
- {{cite LSA |last=Rauhut |first=O.W.M |year=2004 |title=Provenance and anatomy of Genyodectes serus, a large-toothed ceratosaur (Dinosauria: Theropoda) from Patagonia |url=https://www.researchgate.net/publication/235907356_Provenance_and_anatomy_of_Genyodectes_serus_a_large-toothed_Ceratosaur_Dinosauria_Theropoda_from_Patagonia |journal=Journal of Vertebrate Paleontology |volume=24 |issue=4 |pages=894–902 |accessdate=2019-04-06}}
- {{cite LSA |last=Rauhut |first=O.W.M. |last2=Cladera |first2=G. |last3=Vickers-Rich |first3=P. |last4=Rich |first4=T.H. |year=2003 |title=Dinosaur remains from the Lower Cretaceous of the Chubut Group, Argentina |url=http://hazy.cs.wisc.edu/hazy/share/zifeipdf/16979/input_k2opt.pdf |journal=Cretaceous Research |volume=24 |pages=487–497 |accessdate=2019-04-06}}{{doi|10.1016/S0195-6671(03)00067-3}}
- {{cite LSA |last=Weishampel |first=David B. |last2=Dodson |first2=Peter |last3=Osmólska (eds.) |first3=Halszka |year=2004 |title=The Dinosauria, 2nd edition |url=https://books.google.com.co/books/about/The_Dinosauria.html?id=vtZFDb_iw40C&redir_esc=y |publisher=Berkeley: University of California Press |pages=1–880 |accessdate=2019-02-21}}{{ISBN|0-520-24209-2}}
16 : Geologic formations of Argentina|Cerro Barcino Formation|Cretaceous Argentina|Albian Stage|Aptian Stage|Barremian Stage|Hauterivian Stage|Sandstone formations|Mudstone formations|Conglomerate formations|Tuff formations|Alluvial deposits|Fluvial deposits|Fossiliferous stratigraphic units of South America|Paleontology in Argentina|Geology of Chubut Province |