Turtle classification

Turtles have been classified in different ways by different authors. While they were previously considered anapsids, they are now considered more derived.[1] Recent analyses of molecular evidence have strongly suggested that they belong in the clade Archosauromorpha (also known as Archelosauria).[2] Below are many of the possible classifications of Testudines and Testudinata:

Thomson and Shaffer, 2010

Below is a cladogram of living testudines found by Thomson and Shaffer in 2010:[3]

Testudines 
Pleurodira

Sterli 2010

Below is a cladogram found by Sterli in 2010 in a phylogenetic analysis of Pleurodira:[4]

Testudinata

Proganochelys quenstedti

Rhaptochelydia
Australochelyidae

Palaeochersis talampayensis

Australochelys africanus

Proterochersis robusta

Kayentachelys aprix

Condorchelys antiqua

Heckerochelys romani

Indochelys spatulata

Mongolochelys efremovi

Meiolaniidae

Chubutemys copelloi

Kallokibotion bajazidi

Santanachelys gaffneyi

Solnhofia parsonsi

Plesiochelyidae

Portlandemys macdowelli

Plesiochelys solodurensis

Dorsetochelys delairi

Thalassemys moseri

Pleurosternidae
Baenidae

Neurankylus eximius

Trinitichelys hiatti

Plesiobaena antiqua

Boremys pulchra

Baena arenosa

Chisternon undulatum

Siamochelys peninsularis

Xinjiangchelys latimarginalis

Testudines see tree below

Joyce, 2007

Below is a cladogram found by Joyce in 2007 in his publication on turtle phylogeny:[5]

Testudinata

Proganochelys quenstedti

Palaeochersis talampayensis

Australochelys africanus

Proterochersis robusta

Kayentachelys aprix

Meiolania platyceps

Mongolochelys efremovi

Kallokibotion bajazidi

Testudines

Dorsetochelys delairi

Paracryptodira
Pleurosternidae
Baenidae

Neurankylus eximius

Trinitichelys hiatti

Plesiobaena antiqua

Boremys pulchra

Baena arenosa

Chisternon undatum

Eucryptodira

Plesiochelys solodurensis

Portlandemys mcdowelli

Solnhofia parsonsi

Thalassemys moseri

Sandownia harrisi

Santanachelys gaffneyi

Xinjiangchelys latimarginalis

Hangaiemys hoburensis

Judithemys sukhavoni

Dracochelys bicuspis

Sinemys lens

Ordosemys leios

See tree below for Cryptodira

See also

Wikipedia category tree of Testudines taxonomy

Testudines
Cryptodira
Pleurodira

References

  1. Zardoya, Rafael; Meyer, Axel (2001-05-01). "The evolutionary position of turtles revised". Naturwissenschaften. 88 (5): 193–200. Bibcode:2001NW.....88..193Z. doi:10.1007/s001140100228. ISSN 0028-1042. PMID 11482432. S2CID 7836810.
  2. Crawford, Nicholas G.; Parham, James F.; Sellas, Anna B.; Faircloth, Brant C.; Glenn, Travis C.; Papenfuss, Theodore J.; Henderson, James B.; Hansen, Madison H.; Simison, W. Brian (2015-02-01). "A phylogenomic analysis of turtles". Molecular Phylogenetics and Evolution. 83: 250–257. doi:10.1016/j.ympev.2014.10.021. PMID 25450099.
  3. Thomson, R.C.; Shaffer, H.B. (2010). "Sparse Supermatrices for Phylogenetic Inference: Taxonomy, Alignment, Rogue Taxa, and the Phylogeny of Living Turtles" (PDF). Systematic Biology. 59 (1): 42–58. doi:10.1093/sysbio/syp075. PMID 20525619. Archived from the original (PDF) on 2010-11-21.
  4. Sterli, J. (2010). "Phylogenetic relationships among extinct and extant turtles: the position of Pleurodira and the effects of the fossils on rooting crown-group turtles". Contributions to Zoology. 79 (3): 93–106. doi:10.1163/18759866-07903002. hdl:11336/84233.
  5. Joyce, W.G. (2007). "Phylogenetic Relationships of Mesozoic Turtles" (PDF). Bulletin of the Peabody Museum of Natural History. 48 (1): 62. doi:10.3374/0079-032X(2007)48[3:PROMT]2.0.CO;2. S2CID 85998318. Archived from the original (PDF) on 2013-06-06.
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