All animals have one common ancestor – Sea sponges: Scientists
The researchers found that models that can better describe the data favour sponges at the root of the animal tree.
Dec 03, 2017, 16:47 PM ISTOxygen levels were key to early animal evolution: Study
High level of oxygen in ancient oceans were crucial for the emergence of skeletal animals 550 million years ago, a new study suggests. The study is the first to distinguish between bodies of water with low and high levels of oxygen.
Sep 25, 2016, 19:31 PM IST