| 释义 |
- Etymology
- Description
- Paleoenvironment
- References Bibliography
{{short description|Extinct genus of pliosaurid}}{{Speciesbox
| taxon = Sachicasaurus vitae
| fossil_range = Barremian
~{{fossilrange|130|120}}
| image =
| image_caption =
| authority = Páramo Fonseca et al. 2019
}}Sachicasaurus is an extinct genus of brachauchenine pliosaurid known from the Barremian of the Paja Formation, Altiplano Cundiboyacense in the Colombian Eastern Ranges of the Andes. The type species is S. vitae. Etymology The genus name Sachicasaurus refers to Sáchica, the village where the fossil was found, and saurus, meaning "lizard" in Greek.[1] The species epithet vitae, meaning "life" in Latin, was chosen because of the life in Sáchica the fossil find has sparked.[2] Description The holotype specimen, MP111209-1, is known from a near complete skull, and postcranial elements including a complete hindlimb and various vertebrae. Diagnostic features include a very short mandibular symphysis, reduced number of mandibular teeth (17 to 18 versus 25 to 40 in other pliosaurids),[3] slender teeth, among other features. The specimen has an estimated length of almost {{convert|10|m|ft}}.[4] The specimen is interpreted as a sub-adult individual.[2] Paleoenvironment Sachicasaurus is one of four pliosaurids from the Paja Formation, others being Acostasaurus,[5] Stenorhynchosaurus,[6] and "Kronosaurus" boyacensis. It is also contemporaneous with the elasmosaurids Callawayasaurus and Leivanectes,[7] the marine turtle Desmatochelys padillai,[8] the sandowniid turtle Leyvachelys,[9] and the ophthalmosaurid ichthyosaurs Muiscasaurus and Platypterygius sachicarum.[10] References {{portal|Paleontology|Cretaceous|Prehistory of South America}}1. ^Páramo Fonseca et al., 2018, p.225
2. ^1 Páramo Fonseca et al., 2018, p.226
3. ^Páramo Fonseca et al., 2018, p.232
4. ^Páramo Fonseca et al., 2018, p.224
5. ^Gómez Pérez & Noè, 2017
6. ^Páramo et al., 2016
7. ^Páramo Fonseca et al., 2019
8. ^Cadena et al., 2015a
9. ^Cadena et al., 2015b
10. ^Maxwell et al., 2015
Bibliography - Sachicasaurus
- {{cite LSA |last=Páramo Fonseca |first=María Eurídice |last2=Benavides Cabra |first2=Cristian David |last3=Gutiérrez |first3=Ingry Esmirna |year=2018 |title=A new large pliosaurid from the Barremian (Lower Cretaceous) of Sáchica, Boyacá, Colombia |url=https://revistas.unal.edu.co/index.php/esrj/article/view/69916/pdf |journal=Earth Sciences Research Journal |volume=22 |issue=4 |pages=223–238 |accessdate=2019-03-09}}
- Other paleofauna
- {{cite LSA |last=Cadena |first=Edwin A. |last2=Parham |first2=James F. |year=2015a |title=Oldest known marine turtle? A new protostegid from the Lower Cretaceous of Colombia |journal=PaleoBios |volume=32 |pages=1–42 |url=http://escholarship.org/uc/item/147611bv |accessdate=2017-03-30}}
- {{cite LSA |last=Cadena |first=Edwin |year=2015b |title=The first South American sandownid turtle from the Lower Cretaceous of Colombia |url=https://peerj.com/articles/1431/ |journal=PeerJ |volume=3 |pages=e1431 |accessdate=2017-03-30}}
- {{cite LSA |last=Gómez Pérez |first=Marcela |last2=Noè |first2=Leslie F. |year=2017 |title=Cranial anatomy of a new pliosaurid Acostasaurus pavachoquensis from the Lower Cretaceous of Colombia, South America |url=https://www.researchgate.net/publication/322007832_Cranial_anatomy_of_a_new_pliosaurid_Acostasaurus_pavachoquensis_from_the_Lower_Cretaceous_of_Colombia_South_America |journal=Palaeontographica Abteilung A |volume=310 |issue=1–2 |pages=5–42 |accessdate=2019-03-09}}
- {{cite LSA |last=Maxwell |first=Erin E. |last2=Dick |first2=Daniel |last3=Padilla |first3=Santiago |last4=Parra |first4=Mary Luz |year=2015 |title=A new ophthalmosaurid ichthyosaur from the Early Cretaceous of Colombia |url=http://onlinelibrary.wiley.com/doi/10.1002/spp2.1030/abstract |journal=Papers in Palaeontology |volume=2 |pages=59–70|accessdate=2017-03-30}}
- {{cite LSA |last=Páramo Fonseca |first=María Euridice |last2=O'Gorman |first2=José Patricio |last3=Gasparini |first3=Zulma |last4=Padilla |first4=Santiago |last5=Parra Ruge |first5=Mary Luz |year=2019 |title=A new late Aptian elasmosaurid from the Paja Formation, Villa de Leiva, Colombia |url=https://www.researchgate.net/publication/331150499_A_new_late_Aptian_elasmosaurid_from_the_Paja_Formation_Villa_de_Leiva_Colombia |journal=Cretaceous Research |volume=in press |pages=_ |accessdate=2019-03-09}}
- {{cite LSA |last=Páramo |first=María E. |last2=Gómez Pérez |first2=Marcela |last3=Noé |first3=Leslie F. |last4=Etayo |first4=Fernando |year=2016 |title = Stenorhynchosaurus munozi, gen. et sp. nov. a new pliosaurid from the Upper Barremian (Lower Cretaceous) of Villa de Leiva, Colombia, South America|url = http://www.raccefyn.co/index.php/raccefyn/article/view/239 |journal=Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales |pages=84–103 |volume=40 |accessdate=2017-04-20}}
{{Paleontology in Colombia|state=collapsed}} 9 : Pliosaurids|Early Cretaceous reptiles of South America|Barremian life|Cretaceous Colombia|Fossils of Colombia|Paja Formation|Fossil taxa described in 2018|Taxa named by María Páramo|Muysccubun |