Suchodus

Suchodus
Temporal range: Callovian - Oxfordian,
Restoration of S. durobrivensis
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Clade: Crocodylomorpha
Suborder: Thalattosuchia
Family: Metriorhynchidae
Subtribe: Plesiosuchina
Genus:
Lydekker, 1890
Type species
Suchodus durobrivensis
Lydekker, 1890

Suchodus is an extinct genus of metriorhynchid thalattosuchian from the Middle to Late Jurassic period of England and France. It measured between 3.3 and 4.7 m (11 and 15 ft) in total body length.[1] It was a fully marine reptile that would have fed on other large marine fauna.

Taxonomy and phylogeny

In the 2000s, phylogenetic analysis has shown that Suchodus is a distinct metriorhynchid genus.[2][3]

S. durobrivensis was originally the type species of the genus Suchodus, but it was regarded as a junior synonym of Metriorhynchus by Andrews, 1913.[4] It's the only known valid species of the genus.

Classification

Suchodus is a member of the metriorhynchid subfamily called Geosaurinae and the derived tribe Geosaurini. Members were generally large marine predators, adapted to open-ocean life with streamlined bodies, powerful tails, and long, robust jaws lined with sharp teeth. Suchodus is most closely related to the genus Plesiosuchus, both forming the group Plesiosuchina.

The cladogram below is from an analysis by Léa Girard and colleagues in their description of Torvoneustes jurensis. [5]

Geosaurinae

"Metriorhynchus" casamiquelai

"Metriorhynchus" westermanii

Neptunidraco ammoniticus

"Metriorhynchus" brachyrhynchus

Geosaurini
"Subclade T"

Tyrannoneustes lythrodectikos

Purranisaurus potens

"E Clade"

Swiss snout

Druegendorf Taxon

Chouquet cf. hastifer

English snout

Mr. Passmores Specimen

Torvoneustes

References

  1. ^ Young, M.T.; Bell, M.A.; de Andrade, M.B.; Brusatte, S.L. (2011). "Body size estimation and evolution in metriorhynchid crocodylomorphs: implications for species diversification and niche partitioning". Zoological Journal of the Linnean Society. 163 (4): 1199–1216. doi:10.1111/j.1096-3642.2011.00734.x.
  2. ^ Young, Mark T., and Marco Brandalise de Andrade, 2009. "What is Geosaurus? Redescription of Geosaurus giganteus (Thalattosuchia: Metriorhynchidae) from the Upper Jurassic of Bayern, Germany." Zoological Journal of the Linnean Society, 157: 551-585.
  3. ^ Young, Mark T., Brusatte, Stephen L., Ruta, M., Andrade, Marco B. 2009. "The evolution of Metriorhynchoidea (Mesoeucrocodylia, Thalattosuchia): an integrated approach using geometrics morphometrics, analysis of disparity and biomechanics". Zoological Journal of the Linnean Society 158: 801-859.
  4. ^ Andrews C. W. (1913). A descriptive catalogue of the marine reptiles of the Oxford Clay, Part Two. London: British Museum (Natural History), 206 pp.
  5. ^ Girard, L. C.; De Sousa Oliveira, S.; Raselli, I.; Martin, J. E.; Anquetin, J. (2023). "Description and phylogenetic relationships of a new species of Torvoneustes (Crocodylomorpha, Thalattosuchia) from the Kimmeridgian of Switzerland". PeerJ. 11. e15512. doi:10.7717/peerj.15512.