Science
Three Extinct Mammals Found in Wyoming That Were Part of the Post-Dinosaur Revolution – baltimoregaylife
Paleontologists have unearthed bedding of ancient mammal bones amid the arid bushlands of southern Wyoming. Three of those fossil finds belong to previously unknown species, and all the animals at the site paint a different picture of mammal evolution in the wake of the dinosaurs’ demise after the devastating asteroid impact 66 million years ago.
The history of the mammals at the site dates back to the oldest volcanoes – actually hundreds of thousands of years after the asteroid impacted Earth. The three new species Miniconus jeanninaein a Conacodone Hitininery, in a purenos honey; They are all partly named after the paleontologists who excavated them, although the latter is also called Beorn, a figure in by the hobbit can pose-turned into a bear. B. Sharpen It is the largest of the three new species, roughly the size of a cat. The species was distinguished by its lower jaw and teeth.
“Previous studies of North American mammals from the first 320,000 years after the mass extinction found small mammals ranging in size from mice to mice that were somewhat generalized in molar morphology. This led to the understanding that mammals were still recovering and not diversifying rapidly after the extinction event.” Collectively, Madeleine Atberry, a paleontologist at the University of Colorado, said in an email. New study Description of the fossils, published in the Journal of Systematic Paleontology.
“However, the earliest Paleocene fauna of the Great Dividing Basin in Wyoming, where our new mammal species belong, is a different story,” added Ateberry. It has more diversity than we would expect for this period, suggesting that we can’t really generalize about mammals’ recovery after the extinction of the dinosaurs. “
G/O Media may receive a commission
The excavation site was excavated between 2001 and 2011 by Jim Honey, Jeannine Honey and Malcolm McKenna, appointed by Robert Hettinger of the United States.s. Geologist reconnaissance, whose name was recently added to the described file Conacodone Hitininery. now immersed in The dry sandstone area was a floodplain during the period of these ancient mammals and was covered by tangled currents and rivers. Over a decade of work at the site, paleontologists have found more than 420 mammal fossils. The number of fossils that ended up in one place remains uncertain, although one of the team’s theory is that parts of the river would remove sediment and hunt animals (both live and dead) that would eventually turn into fossils.
All three new finds are cuttlefish, an ancient mammal species that eventually gave birth to its offspring with modern ungulates: animals like camels, hippos, horses, and rhinos. otbere said: in the current situation The diversity of these new species illustrates how mammals gradually drove the extinction of the dinosaurs, taking advantage of the absence of large animals to develop new food sources and expand into new environments.
It is likely that more species will be described from fossil deposits – paleontologists have not yet had time to sort out the hundreds of bones that gathered there. I hope so longer ancient mammals, such as Looks like our closest cousins didn’t waste any time on breeding and daring Once you take care of the dinosaur masters.
More: These animal-like creatures lived under the feet of dinosaurs
|
|
A new paper says a giant salmon that lived five million years ago in the coastal waters of the Pacific Northwest used tusk-like spikes as defense mechanisms and for building nests to spawn.
The initial fossil discoveries of the 2.7-metre-long salmon in Oregon in the 1970s were incomplete and led researchers to suggest the fish had fang-like teeth.
The now-extinct fish was dubbed the “saber-tooth salmon,” but the study published in the peer-reviewed journal PLOS One today renames it the “spike-toothed salmon” and says both males and females possessed the “multifunctional” feature.
Study co-author Edward Davis says the revelation about the tusk-like teeth came after the discovery of fossilized skulls at a site in Oregon in 2014.
Davis, an associate professor in the department of earth sciences at the University of Oregon, says he was surprised to see the skulls had “sideways teeth.”
Contrary to the belief since the 1970s, he says the teeth couldn’t have been used for any kind of biting.
“That was definitely a surprising moment,” Davis says of the fossil discovery in 2014. “I realized that all of the artwork and all of the publicity materials … we had just made two months prior, for the new exhibit, were all out of date.”
|
|
April 23 (UPI) — SpaceX launched 23 Starlink satellites into low-Earth orbit Tuesday evening from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida.
Liftoff occurred at 6:17 EDT with a SpaceX Falcon 9 rocket sending the payload of 23 Starlink satellites into orbit.
The Falcon 9 rocket’s first-stage booster landed on an autonomous drone ship in the Atlantic Ocean after separating from the rocket’s second stage and its payload.
The entire mission was scheduled to take about an hour and 5 minutes to complete from launch to satellite deployment.
The mission was the ninth flight for the first-stage booster that previously completed five Starlink satellite-deployment missions and three other missions.
|
|
Voyager 1 has finally returned usable data to NASA from outside the solar system after five months offline.
Launched in 1977 and now in its 46th year, the probe has been suffering from communication issues since November 14. The same thing also happened in 2022. However, this week, NASA said that engineers were finally able to get usable data about the health and status of its onboard engineering systems.
Slow Work
Fixing Voyager 1 has been slow work. It’s currently over 15 billion miles (24 billion kilometers) from Earth, which means a radio message takes about 22.5 hours to reach it—and the same again to receive an answer.
The problem appears to have been its flight data subsystem, one of one of the spacecraft’s three onboard computers. Its job is to package the science and engineering data before it’s sent to Earth. Since the computer chip that stores its memory and some of its code is broken, engineers had to re-insert that code into a new location.
Next up for engineers at NASA’s Jet Propulsion Laboratory in California is to adjust other parts of the FDS software so Voyager 1 can return to sending science data.
Beyond The ‘Heliopause’
The longest-running and most distant spacecraft in history, Voyager 1, was launched on September 5, 1977, while its twin spacecraft, Voyager 2, was launched a little earlier on August 20, 1977. Voyager 2—now 12 billion miles away and traveling more slowly—continues to operate normally.
Both are now beyond what astronomers call the heliopause—a protective bubble of particles and magnetic fields created by the sun, which is thought to represent the sun’s farthest influence. Voyager 1 got to the heliopause in 2012 and Voyager 2 in 2018.
The Pale Blue Dot is a photograph of Earth taken Feb. 14, 1990, by NASA’s Voyager 1 at a distance of … [+]
NASA/JPL-Caltech
Pale Blue Dot
Since their launch from Cape Canaveral, Florida, aboard Titan-Centaur rockets, Voyager 1 and Voyager 2 have had glittering careers. Both photographed Jupiter and Saturn in 1979 and 1980 before going their separate ways. Voyager 1 could have visited Pluto, but that was sacrificed so scientists could get images of Saturn’s moon, Titan, a maneuver that made it impossible for it to reach any other body in the solar system. Meanwhile, Voyager 2 took slingshots around the planets to also image Uranus in 1986 and Neptune in 1989—the only spacecraft ever to image the two outer planets.
On February 14, 1990, when 3.7 billion miles from Earth, Voyager 1 turned its cameras back towards the sun and took an image that included our planet as “a mote of dust suspended in a sunbeam.” Known as the “Pale Blue Dot,” it’s one of the most famous photos ever taken. It was remastered in 2019.
Calgary woman who neglected elderly father spared jail term – Calgary Herald
Giant prehistoric salmon had tusk-like spikes used for defence, building nests: study
Just bought a used car? There’s a chance it’s stolen, as thieves exploit weakness in vehicle registrations
Silver investment demand jumped 12% in 2019
12 Bizarre Things People Did Just To Make Social Media Content
Global Media Markets, 2015-2020, 2020-2025F, 2030F – TV and Radio Broadcasting, Film and Music, Information Services, Web Content, Search Portals And Social Media, Print Media, & Cable – GlobeNewswire
-
Health20 hours agoRemnants of bird flu virus found in pasteurized milk, FDA says
-
Health24 hours ago
Bird flu virus found in grocery milk as officials say supply still safe
-
News16 hours ago
Amid concerns over ‘collateral damage’ Trudeau, Freeland defend capital gains tax change
-
Art20 hours ago
Random: We’re In Awe of Metaphor: ReFantazio’s Box Art
-
Art13 hours ago
The unmissable events taking place during London’s Digital Art Week
-
Media19 hours ago
Vaughn Palmer: B.C. premier gives social media giants another chance
-
Science19 hours ago
NASA hears from Voyager 1, the most distant spacecraft from Earth, after months of quiet
-
Real eState18 hours ago
Blending Function and Style: The Best Garage Door Designs for Contemporary Homes
