Placentarios

Placentarios (Placentalia) forma un del tres subdivisiones del mammiferos actual; le altere duo son monotremas e marsupiales. Le placentarios se distingue de altere mammiferos principalmente in que le feto es portate in le utero de su matre ubi illo recipe nutrition per un placenta usque al nascentia.

Classification

Rango taxonomic

infraclass
cohorte

Supertaxones

Eutheria: Placentarios + lor cippo gruppo (extincte species plus proxime del placentarios que del marsupiales)

Subtaxones

Superlegion o Magnordine Atlantogenata
- Legion o Superordine Xenarthra
  - Ordine Cingulata
  - Ordine Pilosa
- Legion o Superordine Afrotheria
  - Sublegion o Grandordine Afroinsectiphilia
    - Ordine Afrosoricida
    - Ordine Macroscelidea
    - Ordine Tubulidentata
  - Sublegion o Grandordine Paenungulata
    - Ordine Hyracoidea
    - Ordine Proboscidea
    - Ordine Sirenia
Superlegion o Magnordine Boreoeutheria
- Legion o Superordine Euarchontoglires
  - Sublegion o Grandordine Gliriformes
    - Mirordine Glires
      - Ordine Lagomorpha
      - Ordine Rodentia
  - Sublegion o Grandordine Euarchonta
    - Ordine Scandentia
    - Mirordine Primatomorpha
      - Ordine Dermoptera
      - Ordine Primates
- Legion o Superordine Laurasiatheria
  - Sublegion o Grandordine Eulipotyphla
    - Ordine Solenodonota
    - Ordine Erinaceota
  - Sublegion Scrotifera
    - Ordine Chiroptera
    - Ordine Cetartiodactyla
    - Ordine Perissodactyla
    - Ordine Pholidota
    - Ordine Carnivora

Phylogenia

Mammalia

Monotremata

Theria

Marsupialia

Placentalia

Atlantogenata

	Xenarthra

	Afrotheria

Boreoeutheria

	Euarchontoglires

	Laurasiatheria

Historia evolutive

Fossiles de placentarios son posterior al exinction Cretaceo-Paleogeno (extinction del dinosauros non-avee qui occurreva 66 Ma retro), ma analyses indica que le diversication del placentarios in Boreoeutheria e Atlantogenata^{[note 1]} occurreva durante le Cretaceo^[1]^[2] (circa 105±15 Ma retro). Le prime gruppos de Placentarios resulta del continental fragmentation durante le Cretaceo. Le division del Atlantogenata (circa 94 Ma) traduce le distaccamento del Africa del Sud America (circa 110 Ma) e su isolamento territorial. Le diversification del ordines intra Laurasiatheria (inter 82 e 73 Ma) es associate al maximum de fragmentation territorial causate per le alto nivello del mar (circa de 97 a 75 Ma).^[3]

Vide etiam

Notas et referentias

Notas

↑ Prime ramification del corona gruppo Placentalia, anterior species pertenente al cippo gruppo Eutheria.

Referentias

↑ https://www.techno-science.net/actualite/ancetres-humains-ont-assiste-survecu-asteroide-tue-dinosaures-N23448.html
↑ Emily Carlisle, Christine M. Janis, Davide Pisani, Philip C.J. Donoghue & Daniele Silvestro (2023-06-27). "A timescale for placental mammal diversification based on Bayesian modeling of the fossil record". Current Biology. doi:10.1016/j.cub.2023.06.016.
↑ Nicole M. Foley, Victor C. Mason, Andrew J. Harris, Kevin R. Bredemeyer, Joana Damas, Harris A. Lewin, Eduardo Eizirik, John Gatesy, Elinor K. Karlsson, Kerstin Lindblad-Toh, Zoonomia Consortium, Mark S. Springer & William J. Murphy (2023-04-28). "A genomic timescale for placental mammal evolution". Science 380 (6643). doi:10.1126/science.abl8189.

[1] Prime ramification del corona gruppo Placentalia, anterior species pertenente al cippo gruppo Eutheria.

[2] ttps://www.techno-science.net/actualite/ancetres-humains-ont-assiste-survecu-asteroide-tue-dinosaures-N23448.html

[3] Emily Carlisle, Christine M. Janis, Davide Pisani, Philip C.J. Donoghue & Daniele Silvestro (2023-06-27). "A timescale for placental mammal diversification based on Bayesian modeling of the fossil record". Current Biology. doi:10.1016/j.cub.2023.06.016.

[4] Nicole M. Foley, Victor C. Mason, Andrew J. Harris, Kevin R. Bredemeyer, Joana Damas, Harris A. Lewin, Eduardo Eizirik, John Gatesy, Elinor K. Karlsson, Kerstin Lindblad-Toh, Zoonomia Consortium, Mark S. Springer & William J. Murphy (2023-04-28). "A genomic timescale for placental mammal evolution". Science 380 (6643). doi:10.1126/science.abl8189.

[note 1]

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