The origin and early evolution of metatherian mammals: the Cretaceous record
Por um escritor misterioso
Last updated 19 junho 2024
Metatherians, which comprise marsupials and their closest fossil relatives, were one of the most dominant clades of mammals during the Cretaceous and are the most diverse clade of living mammals after Placentalia. Our understanding of this group has increased greatly over the past 20 years, with the discovery of new specimens and the application of new analytical tools. Here we provide a review of the phylogenetic relationships of metatherians with respect to other mammals, discuss the taxonomic definition and diagnosis of Metatheria, outline the Cretaceous history of major metatherian clades, describe the paleobiology, biogeography, and macroevolution of Cretaceous metatherians, and provide a physical and climatic background of Cretaceous metatherian faunas. Metatherians are a clade of boreosphendian mammals that must have originated by the Late Jurassic, but the first unequivocal metatherian fossil is from the Early Cretaceous of Asia. Metatherians have the distinctive tightly interlocking occlusal molar pattern of tribosphenic mammals, but differ from Eutheria in their dental formula and tooth replacement pattern, which may be related to the metatherian reproductive process which includes an extended period of lactation followed by birth of extremely altricial young. Metatherians were widespread over Laurasia during the Cretaceous, with members present in Asia, Europe, and North America by the early Late Cretaceous. In particular, they were taxonomically and morphologically diverse and relatively abundant in the Late Cretaceous of western North America, where they have been used to examine patterns of biogeography, macroevolution, diversification, and extinction through the Late Cretaceous and across the Cretaceous-Paleogene (K-Pg) boundary. Metatherian diversification patterns suggest that they were not strongly affected by a Cretaceous Terrestrial Revolution, but they clearly underwent a severe extinction across the K-Pg boundary.
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://www.thoughtco.com/thmb/tp664GM_FHcmQ-Se1Yf8T-4fZ0k=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/82828311-56a2561d5f9b58b7d0c9293e-5bbe0f0246e0fb0051fc51fd.jpg)
The Evolution of the First Mammals
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://www.athenapub.com/aria1/PAL/md_mamchrono1.jpg)
Athena Review 5-1 Records of Life 25: Jurassic + Cretaceous Mammals
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://d3i71xaburhd42.cloudfront.net/010590c8f3f5fab9239365d5026cbc5700795300/30-Figure9-1.png)
PDF] The origin and early evolution of metatherian mammals: the
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://www.pnas.org/cms/10.1073/pnas.1820863116/asset/7f470f23-d7cd-4b37-b30e-0a76f4fb9b15/assets/graphic/pnas.1820863116fig03.jpeg)
Assembly of modern mammal community structure driven by Late
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41586-020-2234-8/MediaObjects/41586_2020_2234_Fig1_HTML.png)
Skeleton of a Cretaceous mammal from Madagascar reflects long-term
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://i1.rgstatic.net/publication/269689413_The_origin_and_early_evolution_of_metatherian_mammals_the_Cretaceous_record/links/5491940b0cf2d1800d89e554/largepreview.png)
PDF) The origin and early evolution of metatherian mammals: the
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://beta.capeia.com/usercontent/uploads/2017/05/1494414431_3_3bf74.jpg)
Mammals in the Age of Dinosaurs - Capeia
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://www.app.pan.pl/archive/published/app62/app003512017-web/image/18098.png)
app003512017
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://media2.spaceref.com/news/2014/84252_web.jpg)
Asteroid that wiped out dinosaurs may have nearly knocked off
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://upload.wikimedia.org/wikipedia/commons/5/50/The-origin-and-early-evolution-of-metatherian-mammals-the-Cretaceous-record-zookeys-465-001-g004.jpg)
File:The-origin-and-early-evolution-of-metatherian-mammals-the
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://i.natgeofe.com/n/7966c365-6971-4e01-a57c-3bd58f8e6a01/mimoperadectes.jpg?w=1272&h=894)
The Opossum's Tale
![The origin and early evolution of metatherian mammals: the Cretaceous record](https://www.cell.com/cms/attachment/251c1cb5-53d6-4405-a5ae-4df5db15afc0/gr1.jpg)
Untangling the Multiple Ecological Radiations of Early Mammals
Recomendado para você
-
The Letters of Bernard Berenson and Isabella Stewart Gardner (Part II) by Isabella Stewart Gardner Museum - Issuu19 junho 2024
-
Origin: Invalid license Missing DLL FIX!19 junho 2024
-
dragon age origins - Answer HQ19 junho 2024
-
Origin Dragon Age Origins Failed - Colaboratory19 junho 2024
-
Re: Plants vs. Zombies Could Not Activate - Answer HQ19 junho 2024
-
Dragon Age: Origins has a huge fan patch that fixes 790 bugs19 junho 2024
-
Dragon Age: Origins - PlayStation 3, PlayStation 319 junho 2024
-
Dragon Age: Origins - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game19 junho 2024
-
How to Unlock the Reaver Specialization in Dragon Age: Origins « PC Games :: WonderHowTo19 junho 2024
-
Dragon Age Origins: Part 32 A Poisonous Proposition19 junho 2024
você pode gostar
-
Moai Face Easter Island Statue Funny Gift Idea' Sticker19 junho 2024
-
Believe in Yourself 3 Classic Sonic Sticker –19 junho 2024
-
Every Fighting Style Practiced By Bruce Lee (& Where He Learned Them)19 junho 2024
-
Episode 3 - Demon Slayer: Kimetsu no Yaiba Entertainment District Arc - Anime News Network19 junho 2024
-
fierj19 junho 2024
-
One Piece “Wano Country” Climax Key Visual : r/anime19 junho 2024
-
Flight Simulator” ganha versão 100% online – que roda em qualquer computador, celular ou tablet19 junho 2024
-
Create meme t shirt roblox for girls black, roblox t shirt, t19 junho 2024
-
okami shindo life|TikTok Search19 junho 2024
-
Saihate no Paladin: Tetsusabi no Yama no Ou - Visuals19 junho 2024