Anakamacops

Anakamacops (meaning "similar to Kamacops" in Greek) is a genus of dissorophid temnospondyl from the early Middle Permian of China. It is known from the right side of a snout that was described in 1999 from the Dashankou locality of the Xidagou Formation, which is within the city of Yumen. The type species was named A. petrolicus because Yumen is an oil-producing city (petrol).[1] More substantial material, including a partial skull and partial mandibles, was described by Liu (2018).[2]

Anakamacops
Temporal range: Guadalupian,
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: †Temnospondyli
Family: †Dissorophidae
Genus: †Anakamacops
Li and Cheng, 1999
Species
  • †A. petrolicus Li and Cheng, 1999 (type)

Description

Anakamacops is most similar to Kamacops, sharing features such as a choana widely separated from the interpterygoid vacuities and extensive exostosis ornamenting the skull roof. Both are large taxa; the most complete specimen of Anakamacops measures 26 cm in length despite lacking most of the snout. A number of potentially unique features were suggested based on the additional material described by Liu (2018), such as a relatively edentuluous (lacking teeth) vomer and paired (rather than a single, unpaired) occipital ridge.

Phylogenetic analysis from Liu (2018)

Dissorophidae
 

Platystrix rugosus

 
 
 

Aspidosaurus binasser

 
 
Dissorophinae
 

Broiliellus reiszi

 
 
 

Broiliellus brevis

 
 
 

Broiliellus texensis

 
 
 

Broiliellus olsoni

 
 

Dissorophus multicinctus

 
 
 
 
 
 
 
 
 

Brevidorsum profundum

 
 

Reiszerpeton renascentis

 
 
 
 

Conjunctio multidens

 
 

Scapanops neglecta

 
 
 
 
 
 
Eucacopinae
 
 

Cacops aspidephorus

 
 

Cacops morrisi

 
 

Cacops woehri

 
 
Kamacopini
 

Zygosaurus lucius

 
 
 

Kamacops acervalis

 
 

Anakamacops petrolicus

 
 
 
 
 
 
 

References

  1. Li, J.-L.; Cheng, Z.W. (1999). "New anthracosaur and temnospondyl amphibians from Gansu, China - the fifth report on Late Permian Dashankou lower tetrapod fauna" (PDF). Vertebrata PalAsiatica. 37 (3): 234–247.
  2. Liu, Jun (2018-11-05). "Osteology of the large dissorophid temnospondyl Anakamacops petrolicus from the Guadalupian Dashankou Fauna of China". Journal of Vertebrate Paleontology. 38 (5): e1513407. doi:10.1080/02724634.2018.1513407. ISSN 0272-4634.
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