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The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals
A phylogenetic tree shows that crown clade Placentalia and placental orders originated after the K-Pg boundary, but phenomic signals overturn molecular signals to show Sundatheria (Dermoptera + Scandentia) as the sister taxon of Primates, a close link between Proboscidea and Sirenia (sea cows), and the monophyly of echolocating Chiroptera (bats).
Implications of Deltatheridium specimens for early marsupial history
The presence of specialized marsupial patterns of tooth replacement and cranial vascularization in Deltatheridium and the basal phylogenetic position of this taxon indicate that these features are characteristic of Metatheria as a whole.
The Eutherian Mammal Maelestes gobiensis from the Late Cretaceous of Mongolia and the phylogeny of cretaceous eutheria
Maelestes is only the seventh Late Cretaceous eutherian known from the skull and the upper and lower dentitions, and the fifth known from some postcranial elements, and is identified as a member of Cimolestidae sensu Kielan-Jaworowska et al. (2007).
Cretaceous eutherians and Laurasian origin for placental mammals near the K/T boundary
The discovery of a new well-preserved mammal from the Late Cretaceous of Mongolia and a broad-scale phylogenetic analysis that includes all well-known CRETaceous fossils and a wide sample of morphology among Tertiary and recent placentals are reported.
Stem Lagomorpha and the Antiquity of Glires
The results support the hypothesis that rodents and lagomorphs radiated during the Cenozoic and diverged from other placental mammals close to the Cretaceous-Tertiary boundary.
Reconstruction of the cranial vessels in the Early Cretaceous mammal Vincelestes neuquenianus: implications for the evolution of the mammalian cranial vascular system
Vincelestes neuquenianus from the Early Cretaceous of Argentina is the earliest therian mammal known from nearly complete crania and has an enlarged anterior lamina of the petrosal (=lamina obturans), through the base of which ran the ramus superior of the stapedial artery.
Description of a Cranial Endocast from the Fossil Mammal Vincelestes neuquenianus (Theriiformes) and its Relevance to the Evolution of Endocranial Characters in Therians
This report represents the first description of an endocast from a stem therian that is near crown group Theria, a Cretaceous theriiform mammal from Argentina, and examines 21 morphological characters related to the morphology of endocasts and endocranial osteology across 19 taxa to identify potential synapomorphies for Theria.
Earliest Eutherian Ear Region: A Petrosal Referred to Prokennalestes from the Early Cretaceous of Mongolia
The petrosal referred to Prokennalestes is intermediate in having a reduced anterior lamina and lateral flange, both of which are well developed in Vincelestes and essentially lacking in later eutherians and metatherians.
Late Triassic Turtles from South America
It is proposed that Australochelidae is the sister group of Proterochersis plus Casichelydia, that turtles were diverse by the Late Triassic, and that Casicheydia probably originated during the Jurassic.
New Jurassic Mammals from Patagonia, Argentina: A Reappraisal of Australosphenidan Morphology and Interrelationships
Abstract A new mammal, Henosferus molus, n.gen. and n.sp., from the Callovian–Oxfordian (latest Middle to earliest Late Jurassic) Cañadón Asfalto Formation from Chubut Province (Argentina) is…