Icthyosaurs were giant reptiles who lived in the seas at the same time as the dinosaurs ruled the land. They gave live birth to their children. A fossil newly discovered in China, dating back almost a quarter of a billion years, shows the earliest known live birth of a reptile. The fossil literally captures the moment of birth, as there was an embryo still inside the mother, a newborn just outside her, and a third halfway between, in the process of exiting the pelvis. The headfirst posture of the second baby indicates to researchers that live birth may have evolved on land, not in the water in reptiles as previously thought. Icthyosaurs, although they lived in the same time period and could be mistakenfor them owing to their shared reptilian inheritage, were not dinosaurs. Although not a first per se, it still amazes me that, through fossilization, we can look back at a birth in progress that started 248 million years ago.
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The Best DNA Testing Kits of 2018
Test Your DNA Personal DNA testing is more popular now than ever before, as it can be done easily in the comfort of your own home at an affordable cost. It's even the subject of TV shows, including TLC's Who Do You Think You Are? and PBS's Finding Your Roots, in which famous people discover new things about their heritages.
Best Ancestry DNA Test 2017 - Which Testing Kit is Best & How to Choose
If you’ve read all the DNA test reviews, and are still confused, read on. This guide will give you the answers you need to those and many more questions. But first, here’s a quick comparison of the top DNA testing kits: Here are the best DNA tests: AncestryDNA: Best DNA test for genealogy, family matches, ethnicity estimates, and giftingMyHeritage: Best for international matches and advanced genetic genealogy23andMe: Best for dedicated genetic health testingFamilyTreeDNA: Best for distant ancestry (beyond 6-8 generations), YDNA and mtDNA tests
The Sketchbook Project — Brooklyn Art Library / The Sketchbook Project
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