| Macrospondylus Temporal range:
Toarcian
| |
|---|---|
| |
| Macrospondylus bollensis, Holzmaden Germany | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauria |
| Clade: | Pseudosuchia |
| Clade: | Crocodylomorpha |
| Clade: | Crocodyliformes |
| Suborder: | † Thalattosuchia |
| Superfamily: | † Teleosauroidea |
| Family: | † Machimosauridae |
| Genus: | †
Macrospondylus von Meyer, 1831 |
| Species: | †M. bollensis
|
| Binomial name | |
| †Macrospondylus bollensis Jäger,
1828
| |
| Synonyms | |
| |
Macrospondylus is an extinct genus of machimosaurid teleosauroid crocodyliform from the Early Jurassic ( Toarcian) of Europe. Fossils are known from the Posidonia Shale of Germany, the Whitby Mudstone of the United Kingdom, and the " schistes bitumineux" of Luxembourg.
Macrospondylus has historically been synonymized with Steneosaurus. [1] A 2005 phylogenetic analysis of Thalattosuchia, however, did not support the monophyly of Steneosaurus, as the genera Machimosaurus and Teleosaurus both fell within Steneosaurus. [2] Reinforcing the paraphyly of Steneosaurus, Young et al. (2012), Ősi et al. (2018), and Wilberg et al. (2019) recovered Steneosaurus bollensis and other Steneosaurus species in disparate positions within Teleosauridae. [3] [4] [5]
In 2016, its length was estimated at 5.5 m (18 ft), making it the largest known Early Jurassic crocodylomorph. [6] In 2020, the genus was formally revived. [7]
- ^ Steel R. 1973. Crocodylia. Handbuch der Paläoherpetologie, Teil 16. Stuttgart: Gustav Fischer Verlag,116 pp.
- ^ Mueller-Töwe, I. J. (2005). "Phylogenetic relationships of the Thalattosuchia" (PDF). Zitteliana. A45: 211–213.
- ^ Young, M. T.; Brusatte, S. L.; De Andrade, M. B.; Desojo, J. B.; Beatty, B. L.; Steel, L.; Fernández, M. S.; Sakamoto, M.; Ruiz-Omeñaca, J. I.; Schoch, R. R. (2012). Butler, Richard J, ed. "The Cranial Osteology and Feeding Ecology of the Metriorhynchid Crocodylomorph Genera Dakosaurus and Plesiosuchus from the Late Jurassic of Europe". PLoS ONE 7 (9): e44985. doi: 10.1371/journal.pone.0044985. PMC 3445579. PMID 23028723. edit
- ^ Ősi A, Young MT, Galácz A, Rabi M. 2018. A new large-bodied thalattosuchian crocodyliform from the Lower Jurassic (Toarcian) of Hungary, with further evidence of the mosaic acquisition of marine adaptations in Metriorhynchoidea. PeerJ 6:e4668 https://doi.org/10.7717/peerj.4668
- ^ Eric W. Wilberg; Alan H. Turner; Christopher A. Brochu (2019). "Evolutionary structure and timing of major habitat shifts in Crocodylomorpha". Scientific Reports. 9 (1): Article number 514. doi:10.1038/s41598-018-36795-1. PMC 6346023. PMID 30679529.
- ^ Young, MT; Rabi, M.; Bell, MA; Foffa, D.; Steel, L.; Sachs, S.; Peyer, K. (2016). "Big-headed marine crocodyliforms and why we must be cautious when using extant species as body length proxies for long-extinct relatives". Palaeontologia Electronica. 19 (3): 1–14. doi: 10.26879/648.
- ^ Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8: e9808. doi: 10.7717/peerj.9808. PMC 7548081. PMID 33083104.
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.jpg){kind=small}
 | This article about a prehistoric archosaur is a stub. You can help Wikipedia by expanding it. |
 | This article related to a Jurassic reptile is a stub. You can help Wikipedia by expanding it. |
| Macrospondylus Temporal range:
Toarcian
| |
|---|---|
|
| |
| Macrospondylus bollensis, Holzmaden Germany | |
|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauria |
| Clade: | Pseudosuchia |
| Clade: | Crocodylomorpha |
| Clade: | Crocodyliformes |
| Suborder: | † Thalattosuchia |
| Superfamily: | † Teleosauroidea |
| Family: | † Machimosauridae |
| Genus: | †
Macrospondylus von Meyer, 1831 |
| Species: | †M. bollensis
|
| Binomial name | |
| †Macrospondylus bollensis Jäger,
1828
| |
| Synonyms | |
| |
Macrospondylus is an extinct genus of machimosaurid teleosauroid crocodyliform from the Early Jurassic ( Toarcian) of Europe. Fossils are known from the Posidonia Shale of Germany, the Whitby Mudstone of the United Kingdom, and the " schistes bitumineux" of Luxembourg.
Macrospondylus has historically been synonymized with Steneosaurus. [1] A 2005 phylogenetic analysis of Thalattosuchia, however, did not support the monophyly of Steneosaurus, as the genera Machimosaurus and Teleosaurus both fell within Steneosaurus. [2] Reinforcing the paraphyly of Steneosaurus, Young et al. (2012), Ősi et al. (2018), and Wilberg et al. (2019) recovered Steneosaurus bollensis and other Steneosaurus species in disparate positions within Teleosauridae. [3] [4] [5]
In 2016, its length was estimated at 5.5 m (18 ft), making it the largest known Early Jurassic crocodylomorph. [6] In 2020, the genus was formally revived. [7]
- ^ Steel R. 1973. Crocodylia. Handbuch der Paläoherpetologie, Teil 16. Stuttgart: Gustav Fischer Verlag,116 pp.
- ^ Mueller-Töwe, I. J. (2005). "Phylogenetic relationships of the Thalattosuchia" (PDF). Zitteliana. A45: 211–213.
- ^ Young, M. T.; Brusatte, S. L.; De Andrade, M. B.; Desojo, J. B.; Beatty, B. L.; Steel, L.; Fernández, M. S.; Sakamoto, M.; Ruiz-Omeñaca, J. I.; Schoch, R. R. (2012). Butler, Richard J, ed. "The Cranial Osteology and Feeding Ecology of the Metriorhynchid Crocodylomorph Genera Dakosaurus and Plesiosuchus from the Late Jurassic of Europe". PLoS ONE 7 (9): e44985. doi: 10.1371/journal.pone.0044985. PMC 3445579. PMID 23028723. edit
- ^ Ősi A, Young MT, Galácz A, Rabi M. 2018. A new large-bodied thalattosuchian crocodyliform from the Lower Jurassic (Toarcian) of Hungary, with further evidence of the mosaic acquisition of marine adaptations in Metriorhynchoidea. PeerJ 6:e4668 https://doi.org/10.7717/peerj.4668
- ^ Eric W. Wilberg; Alan H. Turner; Christopher A. Brochu (2019). "Evolutionary structure and timing of major habitat shifts in Crocodylomorpha". Scientific Reports. 9 (1): Article number 514. doi:10.1038/s41598-018-36795-1. PMC 6346023. PMID 30679529.
- ^ Young, MT; Rabi, M.; Bell, MA; Foffa, D.; Steel, L.; Sachs, S.; Peyer, K. (2016). "Big-headed marine crocodyliforms and why we must be cautious when using extant species as body length proxies for long-extinct relatives". Palaeontologia Electronica. 19 (3): 1–14. doi: 10.26879/648.
- ^ Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8: e9808. doi: 10.7717/peerj.9808. PMC 7548081. PMID 33083104.
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| This article about a prehistoric archosaur is a stub. You can help Wikipedia by expanding it. |
|
| This article related to a Jurassic reptile is a stub. You can help Wikipedia by expanding it. |