Unshelled ancestor fills big gap in turtle family tree
Turtles may seem like innocent creatures, but the uniquely shelled reptiles have long posed a problem for paleontologists. Shelled turtles are plentiful in the fossil record, but specimens of their intermediate forebears — the missing links between ancestral unshelled reptiles and modern turtles — have remained elusive. Now, a closer look at the skull of what may be one of the earliest turtle relatives is filling gaps in the turtle family tree.
Full content for EARTH is available to subscribers. If you would like to gain access to the full version of this article, as well as all EARTH content, please subscribe today.
If you are connecting using a Library (IP-based) Subscription, please access full issues of the magazine through our Library Access portal.
Oldest marine turtle found in Colombia
A 120-million-year-old sea turtle recently discovered in Colombia is about 25 million years older than the previously oldest-known marine turtle. Despite its age, the new 2-meter-long specimen is very similar to living marine turtles and was placed in the group Chelonioidea, which includes the modern Hawksbill turtle and green sea turtle.
Full content for EARTH is available to subscribers. If you would like to gain access to the full version of this article, as well as all EARTH content, please subscribe today.
If you are connecting using a Library (IP-based) Subscription, please access full issues of the magazine through our Library Access portal.
Mary Caperton Morton
Morton (https://theblondecoyote.com/) is a freelance science and travel writer based in Big Sky, Mont., and an EARTH roving correspondent.
Monday, December 28, 2015 - 06:00
Mary Caperton Morton
Morton (https://theblondecoyote.com/) is a freelance science and travel writer based in Big Sky, Mont., and an EARTH roving correspondent.
Monday, December 28, 2015 - 06:00
Did you know ...
EARTH only uses professional science journalists and scientists to author our content? In this era of fake news and click-bait, EARTH offers factual and researched journalism. But EARTH is a non-profit magazine, and at least 10 times more people read EARTH than pay for it. As advertising revenues across the media decline, we need your help to ensure that we can continue bringing you the reliable and well-written coverage of earth science you know and love. Our goal is not only to inform our readers, but to inform decision makers across the economic and political spectrum about the science of our planet. So, we need your help. By becoming a subscriber or making a tax-deductible contribution to support EARTH, you can fund our writers and help make sure the world knows about our planet.
CURRENT ISSUE
LATEST HEADLINES
CONTEST
