As a kid, I (Rob) have always been fascinated by dinosaurs and the prehistoric mammals of the Ice Age. Recently, scientists
found a squirrel-like creature that lived during the time of the dinosaurs! Here's the article from the Washington Post:
Scientists finally found Zenkerella, the world’s most mysterious mammal
By Sarah Kaplan
The specimen sat in alcohol at the bottom of an opaque plastic
container. Its luxuriant black fur was dark and matted, its
characteristic tail curled.
David Fernandez
peered at the odd-looking critter, which he'd spent the better part of
the past year trying to track down, and hoped it was the real thing.
|
The second male specimen of Zenkerella insignis
was found near the village of Ureca on Bioko, an island off the west
coast of Africa. (Steven Heritage) |
Fernandez
had worked on Bioko Island in Equatorial Guinea for 14 years, but he'd
never seen one of these animals in its entirety before. No scientist
ever had.
|
just for fun... |
He lifted the specimen out of its container and snapped a photo with his phone. Then he texted the image to his colleague
Erik Seiffert, one of the few people in the world who would recognize the creature.
Seiffert immediately texted back: That's
Zenkerella.
"I
think he was even more excited than I was," Fernandez recalled. "It was
amazing, the first entire specimen available for us, and for science
basically."
Zenkerella insignis, the critter caught on
Bioko, is one of the world's most ancient and mysterious mammals. Until
now, it was known only by its fossils and 11 scattered specimens, many
of which had been languishing in natural history collections for over
100 years. Researchers who were interested in the species (and there
aren't many) had little to go on aside from a hind limb here, a few
teeth there. No scientist in history has ever seen it alive.
But,
in a study published Tuesday in the journal PeerJ, Fernandez, Seiffert
and their colleagues describe the capture of three freshly killed
Z. insignis specimens.
The discovery means that, for the first time, scientists were able to
examine the genome of one of the bizarre mammals, and finally figure out
where
Zenkerella fits in our evolutionary family tree.
Members
of the Zenkerella genus are creatures of another world, "living
fossils" that have evolved very little over the past 49 million years.
For context, they're only about 15 million years younger than the
dinosaurs, and some 35 million years older than the oldest great apes.
When they first arose, Australia was still connected to Antarctica, and
the Himalayas didn't even exist yet.
|
An illustration of a Zenkerella skeleton and
map of Bioko Island are superimposed against an image of the rain forest
where the Zenkerella specimens were found. (Erik Seiffert) |
"It's
a long lineage that stretches all the way back 50 million years, and we
only have one species left that we don’t know anything about," Seiffert
said. "We don't know when it is active, or what it eats, or if it
spends all of its time in the trees or on the ground." That's pretty much unprecedented for mammals, which are among the best-researched taxonomic classes of creatures.
Zenkerella is the ultimate survivor. Of the 5,400 mammal
species known to science, only it and five others are the sole surviving
members of ancient lineages. Even among that select group,
Zenkerella's living fossil status makes it almost unique. But it is the least studied of all these ancient creatures.
FOR THE FULL STORY:
https://www.washingtonpost.com/news/speaking-of-science/wp/2016/08/16/scientists-finally-found-zenkerella-the-worlds-most-mysterious-mammal/?postshare=1541471352618906&tid=ss_tw