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      Plesiadapiformes ("Adapid-like" or "near Adapiformes") is an extinct basal pan-primates group, as sister to the rest of the pan-primates. The pan-primates together with the Dermoptera form the Primatomorpha. Purgatorius may not be a primate as an extinct sister to the rest of the Dermoptera or a separate, more basal stem pan-primate branch. Even with Purgatorius removed, the crown primates may even have emerged in this group.

      Plesiadapiformes first appear in the fossil record between 65 and 55 million years ago, although many were extinct by the beginning of the Eocene. They may be the earliest known mammals to have finger nails in place of claws. In 1990, K.C. Beard attempted to link the Plesiadapiformes with the order Dermoptera. They proposed that paromomyid Phenacolemur had digital proportions of the fossil indicated gliding habits similar to that of colugos.
      In the following simplified cladogram, the crown primates are classified as highly derived Plesiadapiformes, possibly as sister of the Plesiadapoidea. The crown primates are cladistically granted here into the Plesiadapiformes, and "Plesiadapiformes" become a junior synonym of the primates. With this tree, the Plesiadapiformes are not literally extinct (in the sense of having no surviving descendants). The crown primates are also called "Euprimates" in this context.

      Alternatively, in 2018, the Plesiadapiformes were proposed to be more related to Dermoptera, or roughly corresponding to Primatomorpha, with both Dermoptera and the primates emerging within this group. Also in a 2020 paper, the primates and Dermoptera were jointly considered sister to the plesiadapiform Purgatoriidae, resulting in the following phylogenetic tree.

      Traditionally, they were regarded as a separate extinct order of Primatomorpha, but it now appears that groups such as the extant primates and/or the Dermoptera have emerged in the group.
      Similarly, in 2021 the Purgatoriidae were classified as sister to Dermoptera, while the rest of the Plesiadapiformes appear to be sister to the remaining primates:

      One possible classification table of plesiadapiform families is listed below.

      Plesiadapiformes
      Family Micromomyidae
      Superfamily Paromomyoidea
      Family Paromomyidae
      Family Picromomyidae
      Family Palaechthonidae
      Family Microsyopidae
      Superfamily Plesiadapoidea
      Family Carpolestidae
      Family Chronolestidae
      Family Plesiadapidae
      Family Saxonellidae


      References




      External links


      Mikko's Phylogeny Archive

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    plesiadapiformesplesiadapiforms characteristicsplesiadapiforms first appeared during the paleocene epochtypes of plesiadapiformestipos de plesiadapiformes
    Plesiadapiformes | PDF

    Plesiadapiformes | PDF

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Alchetron, The Free Social Encyclopedia

    Plesiadapiformes - Wikipedia

    Plesiadapiformes - Wikipedia

    7 Plesiadapiformes ideas | prehistoric animals, primates, paleo art

    7 Plesiadapiformes ideas | prehistoric animals, primates, paleo art

    7 Plesiadapiformes ideas | prehistoric animals, primates, paleo art

    7 Plesiadapiformes ideas | prehistoric animals, primates, paleo art

    7 Plesiadapiformes ideas | primates, prehistoric animals, mammals

    7 Plesiadapiformes ideas | primates, prehistoric animals, mammals

    Plesiadapiformes

    Plesiadapiformes

    7 Latest Plesiadapiformes ideas | primates, prehistoric animals, mammals

    7 Latest Plesiadapiformes ideas | primates, prehistoric animals, mammals

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    plesiadapiformes

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    Plesiadapiformes - Wikipedia

    Plesiadapiformes ("Adapid-like" or "near Adapiformes") is an extinct basal pan-primates group, as sister to the rest of the pan-primates. [4] [5] [6] [7] [8] The pan-primates together with the Dermoptera form the Primatomorpha.

    Primate Origins and the Plesiadapiforms | Learn Science at Scitable

    The group of fossils that is the focus of debates over primate origins is called the plesiadapiforms. This is an incredibly diverse group including more than 140 named species arranged into 11...

    Plesiadapis - Wikipedia

    Plesiadapis is one of the oldest known primate -like mammal genera which existed about 58–55 million years ago in North America and Europe. [2][3] Plesiadapis means "near-Adapis", which is a reference to the adapiform primate of the Eocene period, Adapis.

    Paleontologist discovers most primitive primate skeleton

    Apr 1, 2007 · The team, led by Bloch, is proposing that a group of archaic mammals called plesiadapiforms (please-ee-ah-dape-i-forms) that lived in a slice of time called the Paleocene—between 65 and 55 million years ago, just after the dinosaurs disappeared—are in fact the earliest ancestors of primates.

    Plesiadapis: Habitat, Behavior, and Diet - ThoughtCo

    Dec 13, 2019 · One of the earliest prehistoric primates yet discovered, Plesiadapis lived during the Paleocene epoch, a mere five million years or so after the dinosaurs went extinct—which does much to explain its rather small size (Paleocene mammals had yet to attain the large sizes typical of the mammalian megafauna of the later Cenozoic Era).

    27. The Evolutionary History of Microsyopoidea (Mammalia ... - U …

    Plesiadapiformes is the first group of primate-like mammals known in the fossil record. Plesiadapiformes first appear in the Paleocene (Puercan Land Mammal Age) in sediments of the Western Interior of North America.

    Plesiadapidae - Wikipedia

    Plesiadapidae is a family of plesiadapiform mammals related to primates known from the Paleocene and Eocene of North America, Europe, and Asia. [1][2] Plesiadapids were abundant in the late Paleocene, and their fossils are often used to establish the ages of fossil faunas. [3]

    Paleocene mammals of the world

    During the Paleocene most primate-like animals belonged to a group called Plesiadapiformes. Traditionally, the plesiadapiforms have been regarded as archaic members of the order Primates.

    The decline and extinction of Plesiadapiformes (Mammalia: …

    Plesiadapiforms were among the most diverse and abundant of North American mammalian groups during the Paleocene epoch. Their decline and extinction has been attributed to a variety of causes, including competitive exclusion by rodents and/or by primates of modern aspect (euprimates), and the effects of late Paleocene–early Eocene climatic warming.

    Evolution of plesiadapid mammals (Eutheria, Euarchonta ...

    Aug 18, 2018 · Plesiadapid mammals (Eutheria, Euarchonta, Plesiadapiformes) are well represented in the late Paleocene to early Eocene of Europe (reference levels MP6, MP7 and MP8+9), but relationships among the described species and their links to North American plesiadapids remain disputed.