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| == Description == | == Description == | ||
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| ''Sachicasaurus'' was a large pliosaur, measuring {{convert|10|-|11|m|ft}} long and weighing {{convert|13.5|MT|ST}} as an adult.<ref>{{cite journal|last1=Spindler|first1=F.|last2=Mattes|first2=M.|year=2021|title=Einsame Spitze – Fakten und Spekulation über das Solnhofener Gipfelraubtier|journal=Archaeopteryx|volume=37|pages=56–68}}</ref><ref>{{Cite book |last=Paul |first=Gregory S. |title=The Princeton Field Guide to Mesozoic Sea Reptiles |publisher=Princeton University Press |year=2022 |pages=102}}</ref> The holotype specimen, '''MP111209-1''', was found in 2013 and 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), slender teeth, among other features. With the preserved length estimated at almost {{convert|10|m|ft}}, the specimen is interpreted as a sub-adult individual.<ref name=Paramo2018/> | ''Sachicasaurus'' was a large pliosaur, measuring {{convert|10|-|11|m|ft}} long and weighing {{convert|13.5|MT|ST}} as an adult.<ref>{{cite journal|last1=Spindler|first1=F.|last2=Mattes|first2=M.|year=2021|title=Einsame Spitze – Fakten und Spekulation über das Solnhofener Gipfelraubtier|journal=Archaeopteryx|volume=37|pages=56–68}}</ref><ref>{{Cite book |last=Paul |first=Gregory S. |title=The Princeton Field Guide to Mesozoic Sea Reptiles |publisher=Princeton University Press |year=2022 |pages=102}}</ref> The holotype specimen, '''MP111209-1''', was found in 2013 and 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), slender teeth, among other features. With the preserved length estimated at almost {{convert|10|m|ft}}, the specimen is interpreted as a sub-adult individual.<ref name=Paramo2018/> It is one of the most complete and large pliosaurid specimen.<ref>{{cite journal|author=N. G. Zverkov, E. M. Pervushov|year=2020|title=A gigantic pliosaurid from the Cenomanian (Upper Cretaceous) of the Volga Region, Russia|journal=Cretaceous Research|volume=110|doi=10.1016/j.cretres.2020.104419}}</ref> | ||
| == Paleoenvironment == | == Paleoenvironment == | ||
Revision as of 08:42, 8 November 2023
Extinct genus of pliosaurid
| Sachicasaurus Temporal range: Barremian ~130–120 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Holotype specimen of Sachicasaurus. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Pliosauridae |
| Subfamily: | †Brachaucheninae |
| Genus: | †Sachicasaurus |
| Species: | †S. vitae |
| Binomial name | |
| †Sachicasaurus vitae Páramo Fonseca et al., 2018 | |
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 location where the fossil was found, and saurus, meaning "lizard" in Latinised Greek. The species epithet vitae, meaning "of life" in Latin, was chosen because of the life in Sáchica the fossil find has sparked.
Description
Sachicasaurus was a large pliosaur, measuring 10–11 metres (33–36 ft) long and weighing 13.5 metric tons (14.9 short tons) as an adult. The holotype specimen, MP111209-1, was found in 2013 and 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), slender teeth, among other features. With the preserved length estimated at almost 10 metres (33 ft), the specimen is interpreted as a sub-adult individual. It is one of the most complete and large pliosaurid specimen.
Paleoenvironment
Sachicasaurus is one of four pliosaurids from the Paja Formation, others being Acostasaurus, Stenorhynchosaurus, and Monquirasaurus. It is also contemporaneous with the elasmosaurids Callawayasaurus and Leivanectes, the marine turtle Desmatochelys padillai, the sandowniid turtle Leyvachelys, and the ophthalmosaurid ichthyosaurs Muiscasaurus and Kyhytysuka.
References
- ^ Páramo Fonseca, María Eurídice; Benavides Cabra, Cristian David; Gutiérrez, Ingry Esmirna (2018). "A new large pliosaurid from the Barremian (Lower Cretaceous) of Sáchica, Boyacá, Colombia". Earth Sciences Research Journal. 22 (4): 223–238. doi:10.15446/esrj.v22n4.69916. S2CID 135054193.
- Spindler, F.; Mattes, M. (2021). "Einsame Spitze – Fakten und Spekulation über das Solnhofener Gipfelraubtier". Archaeopteryx. 37: 56–68.
- Paul, Gregory S. (2022). The Princeton Field Guide to Mesozoic Sea Reptiles. Princeton University Press. p. 102.
- N. G. Zverkov, E. M. Pervushov (2020). "A gigantic pliosaurid from the Cenomanian (Upper Cretaceous) of the Volga Region, Russia". Cretaceous Research. 110. doi:10.1016/j.cretres.2020.104419.
- Gómez Pérez & Noè, 2017
- Páramo et al., 2016
- Noè, L.F.; Gómez-Pérez, M. (2021). "Giant pliosaurids (Sauropterygia; Plesiosauria) from the Lower Cretaceous peri-Gondwanan seas of Colombia and Australia". Cretaceous Research. 132: 105122. doi:10.1016/j.cretres.2021.105122.
- Páramo Fonseca et al., 2019
- Cadena et al., 2015a
- Cadena et al., 2015b
- Maxwell et al., 2015
- Cortés, D.; Maxwell, E.E.; Larsson, H.C.E. (2021). "Re-appearance of hypercarnivore ichthyosaurs in the Cretaceous with differentiated dentition: revision of Platypterygius sachicarum (Reptilia:Ichthyosauria, Ophthalmosauridae) from Colombia". Journal of Systematic Palaeontology. 19 (14): 969–1002. doi:10.1080/14772019.2021.1989507. S2CID 244512087.
Bibliography
- Sachicasaurus
- Other paleofauna
- Template:Cite LSA
- Template:Cite LSA
- Template:Cite LSA
- Template:Cite LSA
- Template:Cite LSA
- Template:Cite LSA
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External links
- "Genus: Sachicasaurus". paleofile.com. Archived from the original on November 1, 2023.
| Taxon identifiers | |
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| Sachicasaurus | |