Brazilian fossils reveal homoplasy in the oldest mammalian jaw joint

JRG Rawson, AG Martinelli, PG Gill, MB Soares… - Nature, 2024 - nature.com
The acquisition of the load-bearing dentary–squamosal jaw joint was a key step in
mammalian evolution,,,–. Although this innovation has received decades of study, questions …

Fossils document evolutionary changes of jaw joint to mammalian middle ear

F Mao, C Zhang, J Ren, T Wang, G Wang, F Zhang… - Nature, 2024 - nature.com
The dual jaw joint of Morganucodon, consists of the dentary–squamosal joint laterally and
the articular–quadrate one medially. The articular–quadrate joint and its associated post …

The role of miniaturization in the evolution of the mammalian jaw and middle ear

S Lautenschlager, PG Gill, ZX Luo, MJ Fagan… - Nature, 2018 - nature.com
The evolution of the mammalian jaw is one of the most important innovations in vertebrate
history, and underpins the exceptional radiation and diversification of mammals over the last …

Fossoriality and evolutionary development in two Cretaceous mammaliamorphs

F Mao, C Zhang, C Liu, J Meng - Nature, 2021 - nature.com
Mammaliamorpha comprises the last common ancestor of Tritylodontidae and Mammalia
plus all its descendants. Tritylodontids are nonmammaliaform herbivorous cynodonts that …

Cynodont reptile with incipient mammalian jaw articulation

AS Romer - Science, 1969 - science.org
A diagnostic mammalian character is jaw articulation between squamosal and dentary
bones, replacing the quadrate-articular joint of reptiles. A newly discovered Argentinian …

A complete skull of a stem mammal from the Late Triassic of Brazil illuminates the early evolution of prozostrodontian cynodonts

M Stefanello, AG Martinelli, RT Müller… - Journal of Mammalian …, 2023 - Springer
Abstract Triassic cynodonts from South America are key taxa in the investigation of the
emergence of mammalian characters. One of the most iconic species from the Carnian is …

Development of teeth and jaws in the earliest jawed vertebrates

M Rücklin, PCJ Donoghue, Z Johanson, K Trinajstic… - Nature, 2012 - nature.com
Teeth and jaws constitute a model of the evolutionary developmental biology concept of
modularity and they have been considered the key innovations underpinning a classic …

Highly specialized mammalian skulls from the Late Cretaceous of South America

GW Rougier, S Apesteguía, LC Gaetano - Nature, 2011 - nature.com
Dryolestoids are an extinct mammalian group belonging to the lineage leading to modern
marsupials and placentals,. Dryolestoids are known by teeth and jaws from the Jurassic …

Late-surviving stem mammal links the lowermost Cretaceous of North America and Gondwana

AK Huttenlocker, DM Grossnickle, JI Kirkland… - Nature, 2018 - nature.com
Haramiyida was a successful clade of mammaliaforms, spanning the Late Triassic period to
at least the Late Jurassic period, but their fossils are scant outside Eurasia and Cretaceous …

New evidence from high-resolution computed microtomography of Triassic stem-mammal skulls from South America enhances discussions on turbinates before the …

PHM Fonseca, AG Martinelli, PG Gill, EJ Rayfield… - Scientific Reports, 2024 - nature.com
The nasal cavity of living mammals is a unique structural complex among tetrapods,
acquired along a series of major morphological transformations that occurred mainly during …