Ular nya reptilia ti panjai sereta nadai bekaki tauka bejari ari suborder Serpentes (/sɜːrˈpɛntz/).[2]Baka semua squamate bukai, ular tu ektotermik, vertebrata amniot ti dibungkur enggau sisik ti betindih. Mayuh bansa ular bisi pala enggau beberapa iti sendi lebih ari aki ini sida ke baya, ngasuh sida ulih nelan mangsa ke jauh besai agi ari pala sida (cranial kinesis). Dikena nampung tubuh sida ti sempit, perengka tubuh ular ti bepasang (baka buah pinggang) tampak siti ba mua siti ukai besepiak, lalu tebal agi semina bisi siti paru-paru ti befungsyen. Bisi sekeda spesis ngetanka tali pinggang pelvis enggau sepasang kukut vestigial ba sepiak-sepiak kloaka. Baya udah bebas berevolusyen tubuh ti panjai nadai kaki tauka enggau kaki ti balat kurang sekurang-kurang iya dua puluh lima kali nengah evolusyen konvergen, ngujungka mayuh peturun baya ti nadai kaki.[3] Tu sebaka enggau ular, tang beberapa raban baya ti nadai kaki ti suah nyadi bisi kelopak mata enggau pending luar, ti kurang ba ular, taja pan atur tu ukai universal (peda Amphisbaenia, Dibamidae, enggau Pygopodidae).

Ular
Temporal range:
Late CretaceousPresent,[1] 94–0 Ma
Klasifikasyen saintifik Edit this classification
Missing taxonomy template (fix): Serpentes
Infraorders
Approximate world distribution of snakes, all species

Penerang

  1. Hsiang AY, Field DJ, Webster TH, Behlke AD, Davis MB, Racicot RA, Gauthier JA (May 2015). "The origin of snakes: revealing the ecology, behavior, and evolutionary history of early snakes using genomics, phenomics, and the fossil record". BMC Evolutionary Biology. 15 (1): 87. Bibcode:2015BMCEE..15...87H. doi:10.1186/s12862-015-0358-5. PMC 4438441. PMID 25989795.
  2. Reeder TW, Townsend TM, Mulcahy DG, Noonan BP, Wood PL, Sites JW, Wiens JJ (2015). "Integrated analyses resolve conflicts over squamate reptile phylogeny and reveal unexpected placements for fossil taxa". PLOS ONE. 10 (3): e0118199. Bibcode:2015PLoSO..1018199R. doi:10.1371/journal.pone.0118199. ISSN 1932-6203. PMC 4372529. PMID 25803280.
  3. Wiens JJ, Brandley MC, Reeder TW (January 2006). "Why does a trait evolve multiple times within a clade? Repeated evolution of snakelike body form in squamate reptiles" (PDF). Evolution; International Journal of Organic Evolution. 60 (1): 123–41. doi:10.1554/05-328.1. PMID 16568638. S2CID 17688691. Diarkib (PDF) ari asal ba 2 February 2023. Diambi 21 January 2023.