Afrophidia

Afrophidia is a clade of alethinophidian snakes comprising the groups Henophidia and Caenophidia, essentially making up the snakes people commonly associate with.[1][2][3][4] The name refers to the deep split between Afrophidia and their sister taxon, Amerophidia, which originated in South American origin, and the afrophidians was recently hypothesized to represent a vicariant event of the breakup of Gondwanan South America and Africa.[1]

Afrophidia
Temporal range: 84.9–0 Ma Late Cretaceous to Present
Boa (Boa constrictor)
Eastern racer (Coluber constrictor)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Infraorder: Alethinophidia
Clade: Afrophidia
Vidal, Delmas & Hedges, 2007
Subclades

Unlike the scolecophidians and amerophidians, which have evolved to be small, the afrophidians have evolved many larger species. This is also the group in which venom has been developed in several lines of snakes.[1]

Below is a phylogeny of Afrophidia recovered from numerous phylogenetic work on snakes:[1][5][2][3]

Afrophidia
 
Henophidia
 
Uropeltoidea
 

Uropeltidae

 
 
 

Cylindrophiidae

 
 

Anomochilidae

 
 
 
Pythonoidea
 

Xenopeltidae

 
 
 

Loxocemidae

 
 

Pythonidae

 
 
 
 
 
Booidea
 
 

Calabariidae

 
 

Sanziniidae

 
 
 
Charinidae
 

Charininae

 
 

Ungaliophiinae

 
 
 
 

Erycidae

 
 
 

Candoiidae

 
 

Boidae

 
 
 
 
 
 
 
 
 
Bolyerioidea
 

Xenophidiidae

 
 

Bolyeriidae

 
 
Caenophidia
 
†Anomalophioidea

†Anomalophiidae

 
 
 
 
†Russellophioidea

†Russellophiidae

 
 
 
Acrochordoidea
 

†Nigerophiidae

 
 
 

Acrochordidae

 
 
†Palaeophiidae
 

†Archaeophinae

 
 

†Palaeophiinae

 
 
 
 
 
Colubroides
 

Xenodermidae

 
Colubriformes
 
Pareidae
 

Pareinae

 
 

Xylophiinae

 
 
 
 
 
Viperidae
 

Viperinae

 
 
 

Azemiopinae

 
 

Crotalinae

 
 
 
 
 
 

Homalopsidae

 
 
Elapoidea
 

Prosymnidae

 
 
 

Buhoma

 
 
 
Psammophiidae
 

Pseudaspidinae

 
 

Psammophiinae

 
 
 
 
 
 
Lamprophiidae
 

Pseudoxyrhophiinae

 
 
 

Micrelapiinae

 
 
 

Psammodynastiinae

 
 

Lamprophiinae

 
 
 
 
 
 
Elapidae
 

Calliophiinae

 
 
 

Micrurinae

 
 
 

Najinae

 
 
 

Bungarinae

 
 
 

Elapsoidea

 
 

Hydrophiinae

 
 
 
 
 
 
Atractaspididae
 

Cyclocorinae

 
 

Atractaspidinae

 
 
 
 
 
 
 
 
Colubroidea
Colubridae
 
 

Grayiinae

 
 

Calamariinae

 
 
 
 

Ahaetuliinae

 
 

Colubrinae

 
 
 
 
 
 

Sibynophiidae

 
 

Natricidae

 
 
 
 

Pseudoxenodontidae

 
 
Dipsadidae
 

Carphophiinae

 
 
 

Xenodontinae

 
 

Dipsadinae

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

References

  1. Hedges, SB; Marin, J; Suleski, M; Paymer, M; Kumar, S (2015). "Tree of Life Reveals Clock-Like Speciation and Diversification". Mol Biol Evol. 32 (4): 835–845. arXiv:1412.4312. doi:10.1093/molbev/msv037. PMC 4379413. PMID 25739733.
  2. Reynolds, R. G.; Niemiller, M. L.; Revell, L. J. (2014). "Toward a Tree-of-Life for the boas and pythons: Multilocus species-level phylogeny with unprecedented taxon sampling" (PDF). Molecular Phylogenetics & Evolution. 71: 201–213. doi:10.1016/j.ympev.2013.11.011. PMID 24315866. Archived from the original (PDF) on 2015-12-02. Retrieved 2019-03-05.
  3. Figueroa, A.; McKelvy, A. D.; Grismer, L. L.; Bell, C. D.; Lailvaux, S. P. (2016). "A species-level phylogeny of extant snakes with description of a new colubrid subfamily and genus". PLOS ONE. 11 (9): e0161070. Bibcode:2016PLoSO..1161070F. doi:10.1371/journal.pone.0161070. PMC 5014348. PMID 27603205.
  4. Zheng, Y; Wiens, JJ (2016). "Combining phylogenomic and supermatrix approaches, and a time-calibrated phylogeny for squamate reptiles (lizards and snakes) based on 52 genes and 4162 species". Molecular Phylogenetics & Evolution. 94 (Pt B): 537–547. doi:10.1016/j.ympev.2015.10.009. PMID 26475614.
  5. Pyron; Burbrink; Wiens (2013). "A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes". BMC Evolutionary Biology. 13: 93. doi:10.1186/1471-2148-13-93. PMC 3682911. PMID 23627680.
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