Protungulatum, Confirmed Cretaceous Occurrence of an Otherwise Paleocene Eutherian (Placental?) Mammal

2011 ◽  
Vol 18 (3) ◽  
pp. 153-161 ◽  
Author(s):  
J. David Archibald ◽  
Yue Zhang ◽  
Tony Harper ◽  
Richard L. Cifelli
Keyword(s):  
Placental Mammal

Characterization of Two New preproGnRH mRNAs in the Tree Shrew: First Direct Evidence for Mesencephalic GnRH Gene Expression in a Placental Mammal

1996 ◽  
Vol 104 (1) ◽  
pp. 7-19 ◽  
Author(s):  
Thomas L. Kasten ◽  
Stephanie A. White ◽  
Thomas T. Norton ◽  
Chris T. Bond ◽  
John P. Adelman ◽  
...  
Keyword(s):  
Gene Expression ◽  
Direct Evidence ◽  
Tree Shrew ◽  
Placental Mammal

scholarly journals Eutherians experienced elevated evolutionary rates in the immediate aftermath of the Cretaceous–Palaeogene mass extinction

2016 ◽  
Vol 283 (1833) ◽  
pp. 20153026 ◽  
Author(s):  
Thomas John Dixon Halliday ◽  
Paul Upchurch ◽  
Anjali Goswami
Keyword(s):  
Phylogenetic Analysis ◽  
Adaptive Radiation ◽  
Mass Extinction ◽  
Fossil Record ◽  
Morphological Evolution ◽  
Placental Mammal ◽  
Stochastic Methods ◽  
Ecological Niches ◽  
Evolutionary Radiation ◽  
Quantitative Analyses

The effect of the Cretaceous–Palaeogene (K–Pg) mass extinction on the evolution of many groups, including placental mammals, has been hotly debated. The fossil record suggests a sudden adaptive radiation of placentals immediately after the event, but several recent quantitative analyses have reconstructed no significant increase in either clade origination rates or rates of character evolution in the Palaeocene. Here we use stochastic methods to date a recent phylogenetic analysis of Cretaceous and Palaeocene mammals and show that Placentalia likely originated in the Late Cretaceous, but that most intraordinal diversification occurred during the earliest Palaeocene. This analysis reconstructs fewer than 10 placental mammal lineages crossing the K–Pg boundary. Moreover, we show that rates of morphological evolution in the 5 Myr interval immediately after the K–Pg mass extinction are three times higher than background rates during the Cretaceous. These results suggest that the K–Pg mass extinction had a marked impact on placental mammal diversification, supporting the view that an evolutionary radiation occurred as placental lineages invaded new ecological niches during the Early Palaeocene.

scholarly journals Mitochondrial data are not suitable for resolving placental mammal phylogeny

2014 ◽  
Vol 25 (11-12) ◽  
pp. 636-647 ◽  
Author(s):  
Claire C. Morgan ◽  
Christopher J. Creevey ◽  
Mary J. O’Connell
Keyword(s):  
Placental Mammal ◽  
Mitochondrial Data

scholarly journals Technical Comment on “The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals”

Science ◽  
2013 ◽  
Vol 341 (6146) ◽  
pp. 613.2-613 ◽  
Author(s):  
Mark S. Springer ◽  
Robert W. Meredith ◽  
Emma C. Teeling ◽  
William J. Murphy
Keyword(s):  
Nucleotide Substitution ◽  
Phylogenetic Analyses ◽  
Placental Mammal ◽  
Divergence Times ◽  
Research Article ◽  
Early Paleocene

O’Leary et al. (Research Article, 8 February 2013, p. 662) examined mammalian relationships and divergence times and concluded that a single placental ancestor crossed the Cretaceous-Paleogene (K-Pg) boundary. This conclusion relies on phylogenetic analyses that fail to discriminate between homology and homoplasy and further implies virus-like rates of nucleotide substitution in early Paleocene placentals.

scholarly journals OrthoMaM: A database of orthologous genomic markers for placental mammal phylogenetics

2007 ◽  
Vol 7 (1) ◽  
pp. 241 ◽  
Author(s):  
Vincent Ranwez ◽  
Frédéric Delsuc ◽  
Sylvie Ranwez ◽  
Khalid Belkhir ◽  
Marie-Ka Tilak ◽  
...  
Keyword(s):  
Placental Mammal ◽  
Genomic Markers

scholarly journals Increased homeothermy during reproduction in a basal placental mammal

2014 ◽  
Vol 217 (9) ◽  
pp. 1535-1542 ◽  
Author(s):  
D. L. Levesque ◽  
B. G. Lovegrove
Keyword(s):  
Placental Mammal

scholarly journals Waking the undead: Implications of a soft explosive model for the timing of placental mammal diversification

2017 ◽  
Vol 106 ◽  
pp. 86-102 ◽  
Author(s):  
Mark S. Springer ◽  
Christopher A. Emerling ◽  
Robert W. Meredith ◽  
Jan E. Janečka ◽  
Eduardo Eizirik ◽  
...  
Keyword(s):  
Placental Mammal

scholarly journals The Placental Mammal Ancestor and the Post-K-Pg Radiation of Placentals

Science ◽  
2013 ◽  
Vol 339 (6120) ◽  
pp. 662-667 ◽  
Author(s):  
M. A. O'Leary ◽  
J. I. Bloch ◽  
J. J. Flynn ◽  
T. J. Gaudin ◽  
A. Giallombardo ◽  
...  
Keyword(s):  
Placental Mammal
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