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May 21, 2007 · The fossil record demonstrates that mammals re-entered the marine realm on at least seven separate occasions. Five of these clades are still extant, whereas two are extinct. This review presents a brief introduction to the phylogeny of each group of marine mammals, based on the latest studies using both morphological and molecular data.
- Mark D. Uhen
- 144
- 2007
- 21 May 2007
Jun 22, 2016 · Hundreds of genes experienced convergent shifts in selective pressure in marine mammals. Molecular Biology and Evolution , 2016; msw112 DOI: 10.1093/molbev/msw112 Cite This Page :
Jan 17, 2020 · Using a trait-based approach, we assessed the vulnerability of all marine mammals to global warming under high and low greenhouse gas emission scenarios for the middle and the end of the...
- Camille Albouy, Valentine Delattre, Giulia Donati, Thomas L. Frölicher, Thomas L. Frölicher, Severin...
- 2020
These impacts on California sea lions were first identified in 1998 by The Marine Mammal Center. Record warm water temperatures in 2015 led to the largest algal bloom in history. This bloom off the west coast of the United States resulted in over 200 sea lions suffering from domoic acid toxicosis and also shut down fisheries, such as Dungeness ...
Apr 29, 2021 · Humans appeared in southern Africa between 200,000-350,000 years ago. We know we come from Africa because our genetic diversity is highest there, and there are lots of fossils of primitive humans ...
The mammals, once small and rodent-like, took advantage of the dinosaurs’ extinction and evolved in new directions, with some lineages eventually giving rise to the whales, seals, and manatees that live in the ocean today.
As that bipedal ape evolved into what would become us, other mammals came and went. Most had to adapt to yet another global climate change about 2.5 million years ago, triggered in part by the ...
