The timing of the diversification of placental mammals relative to the Cretaceous-Paleogene (KPg) boundary mass extinction remains highly controversial. In particular, there have been seemingly irreconcilable differences in the dating of the early placental radiation not only between fossil-based and molec...
Within the Sugarite coal zone of the Raton Formation, which contains both the KPg boundary and the fern-spore spike, Anemia-like schizaeaceous foliage currently classified as A.elongata (Newberry) Knowlton is associated with Cyathidites spores. As no other fern megafossil that has been ...
[3]Keller G, Adatte T, Stinnesbeck W, et al. Chicxulub impact predates the KT boundary mass extinction[J]. Proceedings of the National Academy of Sciences, 2004, 101(11): 3753-3758. [4]Kring D A. The Chicxulub impact event and its environmental consequences at the Cretaceous–Tertiary ...
but these are usually left out of macroevolutionary analyses because of great uncertainty in the relationships of Paleocene forms. We have conducted extensive phylogenetic analyses of Cretaceous and Paleogene mammals and analysed evolutionary rates and disparity across the K/Pg boundary to elucidate this...
boundarySubject Code:C04With the support by the National Natural Science Foundation of China,the research team led by Prof.Wu Shaoyuan(伍少远)at Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics,School of Life Sciences,Jiangsu Normal University,recently reported their work entitled"...
Placental mammals underwent a continuous radiation across the KPg boundary Subject Code:C04With the support by the National Natural Science Foundation of China,the research team led by Prof.Wu Shaoyuan(伍少远)at Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics,School of Life Sciences...
The impact of the asteroid(KPg impact event)at Chicxulub is now a well-documented geologic event which took place at the Cretaceous/Paleogene(KPg)boundary(Schulte et al., 2010). However, the effect of this event is relatively unknown in the Tampico-Misantla Basin, which is only about 900 ...
The K-Pg boundary impact, from the surroundings of the Chicxulub Crater to global effectsSmit, JanOcampo, AdrianaAcikalin, SanemVellekoop, Johan
The Cretaceous-Paleogene boundary deposit in the northern deepwater Gulf of Mexico, first described by Denne et aL (2013), has been analyzed using the well logs from the 58 known penetrations. The deposit varies regionally in the well log signature, lithology, thickness, depth of erosion, and...
The several million years preceding the Cretaceous/Paleogene (K/Pg) boundary has been the focus of many studies. Changes in ocean circulation and sea level, extinctions, and major volcanic events have all been documented for this interval. Important research questions these...