These New Dinosaurs Are Changing The Way We Look At Dinosaurs...
Every kid grows up loving dinosaurs. As we grow older we listen to science teachers explain how dinosaurs lived and died, we watch documentaries about the age when reptiles ruled the land, and by the time we reach adulthood most of us like to think we have a pretty good handle on what things were like millions and millions of years ago. A new study focusing on the frequency of fresh dinosaur discoveries suggests we might have it all wrong, and that our understanding of the hundreds of millions of years that preceded humanity’s takeover of the planet could change dramatically over the next decade or two.
All we know about the history of the dinosaurs is what we’re able to piece together from the remains they left behind. We have bones and tracks and that’s about it. Working with that sparse evidence has always been a challenge for paleontologists, but the frequency with which new dinosaurs are being discovered has spiked dramatically in just the past twenty years or so. Those new discoveries are constantly changing what we thought we knew about prehistoric life, and it won’t be long before we look back on previous assumptions and find how misguided those guesses were.
the last 20 years, the number of dinosaur genera named, as well as the number of specimens of those genera, has increased greatly,” Jonathan P. Tennant, co-author of the work, explains. “This has profound impacts on our understanding of dinosaur diversity, especially as these discoveries are unevenly spread over time and space. There are still huge gaps in our knowledge of the fossil record, and areas in space and geological time where the rapid pace of discovery is changing much of what we thought we knew about dinosaurs.”
The fossil gods shined upon us yesterday. Three nice fossils in one screen? We'll take it!
A new display, featuring the first evidence of sperm whales in central Italy during the Pleistocene, was unveiled at the Museum of Geological Time in Allerona (Umbria), Italy, on 23 February 2018.
The new exhibit focuses on recent discoveries of the fossilized remains of whales left behind in Quaternary marine sediments (approximately 1.75 million years ago), as well as of trace fossils associated with them.
Researchers from the Department of Physics and Geology at the University of Perugia (Angela Baldanza, Roberto Bizzarri, Federico Famiani, and Paolo Monaco) began exploring the area in 2011, and excavations have continued since then.
The exhibit includes specimens of fossil ambergris (the trace fossil has been christened Ambergrisichnus alleronae) as well as of shark teeth, crustaceans, mollusks, and the skeletonized remains of whales.
The discovery of fossil ambergris is extremely unusual, and the Allerona specimens provide the only evidence to date that sperm whales inhabited the shallow sea that covered what is today Allerona during the Pleistocene. So far, three whale skeletons have also been discovered in marine clays and will be displayed in the museum as soon as preparation and restoration have concluded.
So the @lady_naturalist challenged me to a This Eats That #fos#fossilay. Unfortunately we don’t have any fossils with a bonus fossil in the gut...so I’ll go with the next best thing - other researcher’s collections! 😄 This specimen is of a large cat sized Cretaceous mammal named “Repenomamus”. Now...you maybe thinking - wait...weren’t all mammals super small in the Cretaceous? Mostly yes, but this and another specimen from 135 million years ago in Liaoning Province of China got up to 20lbs (maybe more)! 🍗
Here’s were the This Eats That comes in. This specimen also shows that it feasted on baby dinosaurs, Psittacosaurus to be exact. The boxed area labeled "b" provides a close-up view of the tiny bones of a young Psittacosaurus that were found inside the mammal's stomach. The various Psittacosaurus bones found are identified in the color-coded chart at bottom right.
📷 Credit: American Museum of Natural History. ⚒
#fos#fossilfriday AND prep update!! This beautiful slab of rock was waiting for me today when I got to the museum: this is a dome from a Pachycephalosaurus! The dome is comprised of the frontal and parietal bones and is about 12cm thick!!! Pachys are another group of dinos that got a lot of attention after the Jurassic Park movies, where they were shone to fight each other by head butting like rams with these thick skulls. There is some debate whether or not this was an actual behavior displayed by these animals or if the super thick bone is simply used as a means of display. This dome is also interesting because it appears to have been mineralized out of siderite. Siderite is an iron mineral- so this thing is pretty heavy! Along with this dome is a picture of a cast Pachycephalosaurus and another dome at the #burpeemuseum. #paleontology #fossil #dinosaur#rock#bone#mineral#museum#jurassicpark#ram#prep
E is for Egg. This Florida Museum specimen is a bird egg, from the Late Eocene or Early Oligocene. It was found this past summer at the Death Valley site in the Nebraska badlands. Specimens like this can help us learn about parental behavior, animal growth rates, preservation conditions, and more! Next week is letter F, and a term you’ll really dig.
"When the sperm whales were swimming in Umbria" - Today the official presentation of the new Geological Cycle Museum layout. Here you can see the only case in the world of ambergris fossil, found in Allerona, where during the Pleistocene, there was the sea and sperm whales were present. Amber was given the name of "Ambergrisichnus alleronae", from Allerona, today one of the most beautiful villages in Italy.
Смарите, я нашла оленя короля эльфов Трандуила в музее Палеонтологии.🦌💅
Он называется ирландский, но нашли около Рязани.
Рязанское Лихолесье живо! 😭
Самый крупный вид рода гигантских оленей, почти двух метров в холке, весом до тонны. У самцов были огромные рога, до 3,5 м в размахе, массой до 40 кг каждый.
Я вот сейчас подумала, а как в фильме олень с такими рогами жил в лесу? Он бы и метра там не прошёл. 🤔 Лезут же мысли в голову перед сном 😁