Acheroraptor temertyorum


Name: Acheroraptor temertyorum

Name Meaning: Underworld Thief

First Described: 2013

Described By: Evans et al. 

ClassificationDinosauria, Saurischia, Eusaurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Avetheropoda, Coelurosauria, Tyrannoraptora, Maniraptoriformes, Maniraptora, Pennaraptora, Paraves, Eumaniraptora, Dromaeosauridae, Eudromaeosauria, Velociraptorinae

Acheroraptor was a raptor closely related to Velociraptor from the Hell Creek Formation of Montana, dating back to the Maastrichtian age of the Late Cretaceous about 66 million years ago. It is the youngest known species of dromaeosaurid, living right up to the K-T boundary. Even though it was a velociraptorine, it was found outside of Asia, which is still a rarity for that group. It lived alongside many dinosaurs that are quite famous - specifically Tyrannosaurus and Triceratops, as well as Nanotyrannus, Struthiomimus, Ornithomimus, Troodon, Paronychodon, Avisaurus, Brodavis, Anzu, Leptorhynchos, Ankylosaurus, Edmontonia, Leptoceratops, Torosaurus, Tatankaceratops, Thescelosaurus, Edmontosaurus, Parasaurolophus, Sphaerotholus, Stygimoloch, Dracorex, and Pachycephalosaurus. It also lived alongside many mammals, which it probably ate. 


Shout out goes to shortylego!

Today is World Turtle Day!

Researchers at North Carolina State University recently published a paper describing a “Giant” palaeogene turtle. The fossil named, Carbonemys cofrinii, was discovered in a coal mine in Northern Colombia, and is 60 million years old, and has been described as being as “large as a smart car”.

As well as having a large size, the turtle also had large and powerful jaws, which researchers believe would have enabled it to eat anything nearby including molluscs, smaller turtle and even small crocodiles.

The image below is of Edwin Cadena, the researcher who discovered the fossil, standing next to the shell.

to read more about this amazing find head to the link below;




The fossils are two well-preserved skulls and their study has revealed “unexpected levels of complexity” of evolution, in dwarf  and pygmy sperm whales. 

Called Nanokogia isthmia, it was found in Panama and belongs to a group of toothed whales known as Kogiids . Both of the two living species: the dwarf and pygmy sperm whales, are close relatives of the huge sperm whale. The specific name ‘isthmia’, derives from the Latin ‘isthmus’ in reference to the Isthmus of Panama.

The spermaceti organ is located in the front and is associated with the generation of sounds and echolocation.  The song of the extinct whale may have been different,  because its spermaceti organ was probably bigger than the organ in the modern dwarf or pygmy whales.

The study suggests there were a time when those little whale had a much larger spermaceti, but they suffered an evolutionary reduction that occurred in at least, two separate occasions, although experts do not yet know why.

The new discovery gives us a better understanding of the ancient distribution of these poorly known relatives of the sperm whale. Previously we knew of similarly-aged pygmy and dwarf whales from Baja California and Peru, but this new fossil fills in an important geographic gap in the group’s ancient distribution

Yurgovuchia doellingi


Name: Yurgovuchia doellingi

Name Meaning: Coyote

First Described: 2012

Described By: Senter et al. 

ClassificationDinosauria, Saurischia, Eusaurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Avetheropoda, Coelurosauria, Tyrannoraptora, Maniraptoriformes, Maniraptora, Pennaraptora, Paraves, Eumaniraptora, Dromaeosauroidea, Dromaeosauridae, Eudromaeosauria, Dromaeosaurinae

Yurgovuchia is another of our raptors, only known from a single specimen, which did not include the head. It was a small theropod, about 2.5 meters long and the size of a coyote - hence its name. It was found in the Yellow Cat Member of the Cedar Mountain Formation in Utah. It lived in the Barremian age of the Early Cretaceous about 130 to 125 million years ago. It was closely related to Dromaeosaurus, Achillobator, and Utahraptor. It lived alongside many other dinosaurs including Iguanacolossus, Falcarius, Geminiraptor, Utahraptor, Nedcolbertia, a velociraptorine dromaeosaurid, and a polacanthine. 


Shout out goes to andriguana!

A fossil skeleton of a primitive, Eocene aged whale at “Whales Valley”, 150 km southwest of Cairo, Egypt.  This spectacular site helps to provide an explanation to one of the biggest mysteries of the evolution of whales, the emergence of the whale as an ocean going mammal from a land-based animal. No other place in the world yields the number, concentration and quality of such fossils making it at particularly scientifically important location.

The whales found in Whale Valley possess small hind limbs, a feature that is not seen in modern whales.  They also have a powerful skull with teeth like those found in carnivorous land mammals. Several other types of mammals are present including three species of sea cows. These were fully marine like the whales, and likewise show primitive features not seen in modern species and possess teeth that suggest that they grazed on seagrasses and other marine plants.

Be sure to follow the Fossil Porn Tumblr blog for more amazing fossil photos and news stories.



Oxford scientists have discovered the fossil remains of a six foot long lobster-like sea monster. It’s called Aegirocassis benmoulae (named after the Moroccan fossil hunter Mohamed Ben Moula who discovered the remains). It’s part of a group of species called “anomalcaridids” - giant plated arthropod ancestors who ruled the Cambrian and Ordovician seas (520 - 443 million years ago). FULL STORY HERE

Most of anomalcaridids were like sharks, hunting other sea creatures, but this new species is more like a baleen whale. It used spines on its head to filter sea water and trap tiny particles of food.


  • A reconstruction of the Aegirocassis benmoulae by Marianne Collins/ArtofFact.
  • The Aegirocassis’s spiny net filter that it used for feeding.
  • Allison Daley, one of the scientists who described this new species, at a dig.

A beautifully articulated, rear paddle of a 183 million year old Ichthyosaur. The paddle is approximately 8 inches long. It comes from the Posidonia Shale Formation formation in Southern Germany.

Ichthyosaurs (“Fish Lizard”) was a giant marine reptile which thrived from much of the Mesozoic era. They evolved in the mid Triassic from a group of unidentified land reptiles which transition back into the water. This line evolved in parallel to the ancestors of todays dolphins and whales, something known as convergent evolution.

A new premium fossil list at Fossil Era.


A bird that lived during the Late Jurassic period that is a transitional species between feathered dinosaurs such as Velociraptor and Anchiornus, and modern birds. The feather impressions found on archaeopteryx are advanced flight feathers, and suggest feathers began evolving well before the Late Jurassic. Also, this fossilized version is super creepy and super cool.


Isn’t this little guy cute? Don’t you want one of your very own? Yes you do. I have this little guy over here. He’s cute too, but he’s only small. Now there’s a bigger one. Go get one.

Who doesn’t want their very own pet trilobite? Now you can have one too!

It’s easy to find plush models of large prehistoric animals like dinosaurs, mammoths, and saber-tooth cats. But here at the Paleontological Research Institution (PRI), we recognize that creatures both large and small are a huge part of life on Earth. Our wildly successful plushie line, Paleozoic Pals, was designed to bring lesser-known and lesser sized -yet just as important- fossil creatures to life for the community of scientists, students, and the public as a whole to enjoy.