Halas

An halas[1] o dupóng[2] (Iningles: snake) usa ka reptilya han orden Squamata ngan ubos-orden Serpentes. An sawa ngan ibingan amo an mga halimba…

Halas

An halas[1] o dupóng[2] (Iningles: snake) usa ka reptilya han orden Squamata ngan ubos-orden Serpentes. An sawa ngan ibingan amo an mga halimbawa san halas na agsub maiimdan ha Samar.

Ebolusyon

An fossil na makikilala na kanan halas una na nabuhi sadton Cretaceous period.[3] An giaagapi na fossil san halas nagtikang sa Utah ngan Algeria, na nagrepresentar sa genera Coniophis ngan Lapparentophis. Inin mga lugar na gintikangan sini na mga fossil nagkakaedad sadton Albian ug Cenomanian san panahon sa kaurhian san Cretaceous, haros 112 tubtob 94 milyones katuig an nakalabay. Sugad man, an sayo nga lugar sa Algeria nagkakaedad sin sin 125 tubtob 112 milyones katuig an nakalabay.[4]

Distribusyon

Approximate world distribution of snakes.
Approximate world distribution of snakes.

May'ada lahos sa 2,900 na specie san halas na mahihiagiaan tikang ha Arctic Circle ha Scandinavia ha norte tubtob timog ha Australia.[5] Mahihiagian an halas sa natanan na kontinente maliban ha Antarctica. Mahihiagian liwat ini sa kadagatan, ngan sa higtaas na lugar sugad san Himalayan Mountains ha Asya.[5][6]:143 Daramo na puro na kun diin wara halas, sugad san Ireland, Iceland, ngan New Zealand[7][6] (kudi an dagat sa libot san New Zealand pirmi ginbibisita san yellow-bellied sea snake ngan san banded sea krait).[8]

Pinanbasaran

  1. ↑ Abuyen, Tomas A. Diksyunaryo Waray-Waray [Visaya] English-Tagalog. Kalayaan Press Mktg. Ent., Inc. Quezon City. Tuig 2000. ISBN 971-08-6050-X. Pakli Ihap 107.
  2. ↑ Abuyen, Tomas A. Diksyunaryo Waray-Waray [Visaya] English-Tagalog. Kalayaan Press Mktg. Ent., Inc. Quezon City. Tuig 2000. ISBN 971-08-6050-X. Pakli Ihap 84.
  3. ↑ Durand, J.F. (2004). "The origin of snakes". Geoscience Africa 2004. Abstract Volume, University of the Witwatersrand, Johannesburg, South Africa, pp. 187.
  4. ↑ Vidal, N., Rage, J.-C., Couloux, A. and Hedges, S.B. (2009). "Snakes (Serpentes)". Pp. 390-397 in Hedges, S. B. and Kumar, S. (eds.), The Timetree of Life. Oxford University Press.
  5. ↑ 5.0 5.1 Ipakita an sayop: Invalid <ref> tag; no text was provided for refs named "Sanchez".
  6. ↑ 6.0 6.1 Conant R, Collins JT. 1991. A Field Guide to Reptiles and Amphibians: Eastern and Central North America. Houghton Mifflin, Boston. 450 pp. 48 plates. ISBN 0-395-37022-1.
  7. ↑ Ipakita an sayop: Invalid <ref> tag; no text was provided for refs named "Bauchot".
  8. ↑ Natural History Information Centre, Auckland War Memorial Museum. "Natural History Questions". Auckland War Memorial Museum Batakan:Pipe Tamaki Paenga Hira. Auckland, New Zealand: Auckland War Memorial Museum. Q. Are there any snakes in New Zealand?. Ginhipos tikang han orihinal han 12 Hulyo 2012. Ginkuhà 26 Abril 2012.

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