Thu . 19 Mar 2019


allotheria, allotherians
Allotheria meaning "other beasts", from the Greek αλλός, allos–other and θήριον, therion–wild animal is an extinct branch of successful Mesozoic mammals The most important characteristic was the presence of lower molariform teeth equipped with two longitudinal rows of cusps[1] Allotheria includes Multituberculata, Gondwanatheria which may be part of Multituberculata, as the sister group to Cimolodonta,[2][3][4][5] and probably Haramiyida,[6] although some studies show them to be more basal mammaliaforms rather than true mammals, therefore differing from true allotheres significantly[7][8]

Allotheres also had a narrow pelvis, indicating that they gave birth to tiny helpless young like marsupials do This is a feature of all non-placental mammals[9]


When he first identified Allotheria in 1880, Othniel Marsh regarded this group as an order within Marsupialia However, in 1997 McKenna and Bell classified Allotheria as an infraclass


  1. ^ Butler, PM 2000 "Review of the early allotherian mammals" Acta Palaeontologica Polonica 45 4: 317–342 
  2. ^ Krause, D W; Prasad, G V R; von Koenigswald, W; Sahni, A; Grine, F E 1997 "Cosmopolitanism among Gondwanan Late Cretaceous mammals" PDF Nature 390 6659: 504–507 Bibcode:1997Natur390504K doi:101038/37343 Archived from the original PDF on 2010-06-11 
  3. ^ Krause, David W; Hoffmann, Simone; Wible, John R; Kirk, E Christopher; Schultz, Julia A; von Koenigswald, Wighart; Groenke, Joseph R; Rossie, James B 2014-11-05 O'Connor, Patrick M, Seiffert, Erik R, Dumont, Elizabeth R, Holloway, Waymon L, Rogers, Raymond R, Rahantarisoa, Lydia J, Kemp, Addison D, Andriamialison, Haingoson "First cranial remains of a gondwanatherian mammal reveal remarkable mosaicism" Nature Nature Publishing Group, a division of Macmillan Publishers Limited 515: 512–517 Bibcode:2014Natur515512K doi:101038/nature13922 ISSN 1476-4687 PMID 25383528 
  4. ^ Drake, Nadia November 5, 2014 "Fossil From Dinosaur Era Reveals Big Mammal With Super Senses" nationalgeographiccom National Geographic Society Retrieved November 5, 2014 
  5. ^ Wilford, John Noble November 5, 2014 "Fossil's Unusual Size and Location Offer Clues in Evolution of Mammals" The New York Times Retrieved November 6, 2014 
  6. ^ Luo, Z-X; Kielan-Jaworowska, Z; Cifelli, RL 2002 "In quest for a phylogeny of Mesozoic mammals" Acta Palaeontologica Polonica 47 1: 1–78 
  7. ^ Chang, Kenneth 16 November 2015 "Jawbone in Rock May Clear Up a Mammal Family Mystery" The New York Times Retrieved 17 November 2015 
  8. ^ Luo, Zhe-Xi; Gates, Stephen M; Jenkins Jr, Farish A; Amaral, William W; Shubin, Neil H 16 November 2015 "Mandibular and dental characteristics of Late Triassic mammaliaform Haramiyavia and their ramifications for basal mammal evolution" PNAS: 201519387 Bibcode:2015PNAS112E7101L doi:101073/pnas1519387112 PMC 4697399  Retrieved 17 November 2015 
  9. ^ Michael L Power,Jay Schulkin The Evolution Of The Human Placenta pp 68– 

Further reading

Zofia Kielan-Jaworowska, Richard L Cifelli, and Zhe-Xi Luo, Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure New York: Columbia University Press, 2004, 249

allotheria, allotherians

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    Allotheria beatiful post thanks!


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