Bentonyx

Bentonyx (meaning "Bentons' claw") is an extinct genus of rhynchosaur from the middle Triassic epoch of Devon in England.[1] Its fossil, a well preserved skull, BRSUG 27200, was discovered in Otter Sandstone Formation (late Anisian age) and was first assigned to Rhynchosaurus spenceri, that is known from 25 specimens. This species was reassigned to its own genus, Fodonyx, that was first described by David W. E. Hone and Michael Benton in 2008.[2] More recently, this skull was reassigned to this genus by Max C. Langer, Felipe C. Montefeltro, David E. Hone, Robin Whatley and Cesar L. Schultz in 2010 and the type species is Bentonyx sidensis.[1][3][4]

Bentonyx
Temporal range: Middle Triassic, Anisian
Skull
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: †Rhynchosauria
Family: †Rhynchosauridae
Clade: †Hyperodapedontidae
Genus: †Bentonyx
Langer et al., 2010
Species
  • †B. sidensis Langer et al., 2010 (type)

The Cladogram below is based on work by Martin Ezcurra et al.[5]

Rhynchosauria
 

Mesosuchus

 
 
 

Howesia

 
 
Rhynchosauridae

Rhynchosaurus

 
Hyperodapedontidae
Stenaulorhynchinae
 

Brasinorhynchus

 
 

Stenaulorhynchus

 
 
 
 

Langeronyx

 
 
 

Bentonyx

 
 
 

Fodonyx

 
Hyperodapedontinae
 

Isalorhynchus

 
 
 

Teyumbaita

 
 

Hyperodapedon

 
 
 
 
 
 
 
 
 
 

References
  1. Max C. Langer; Felipe C. Montefeltro; David E. Hone; Robin Whatley; Cesar L. Schultz (2010). "On Fodonyx spenceri and a new rhynchosaur from the Middle Triassic of Devon". Journal of Vertebrate Paleontology. 30 (6): 1884–1888. doi:10.1080/02724634.2010.521901.
  2. David W. E. Hone & Michael J. Benton (2008). "A new genus of Rhynchosaur from the Middle Triassic of South-West England". Palaeontology. 51 (1): 95–115. doi:10.1111/j.1475-4983.2007.00739.x.
  3. 3d-fossils.ac.uk - BRSUG 27200
  4. Paleobiology Database - Bentonyx
  5. Martin D. Ezcurra; Felipe C. Montefeltro; Richard J. Butler (2016). "The Early Evolution of Rhynchosaurs". Frontiers in Ecology and Evolution. 3: 142. doi:10.3389/fevo.2015.00142.


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