akamarykate:

piscine-unrelated:

cunicular:

FUCK

SCIENCE!

This is why I’m writing YA about the plague…it was creepier than any of the manufactured apocalyptic dystopias I could come up with.

(Source: appropriately-inappropriate, via carapace-cowl)

kanakaknowledge:

Hawaiian Men

In my culture the tāne (Men) perform the hura just as much, if not more, than the wāhine (Women). 

Hārau - Ke Kai ʻO Kahiki (Te Tai ʻO Tahiti)

(via geekmehard)

usimahaeua:

Look at that treal ass Tongan hair!! hehehe… Gorgeous Heu of Te Vaka Nui in Las Vegas, NV

(Source: usimahaeua, via geekmehard)

romkids:

Acheroraptor temertyorum: New dinosaur suggests migration from Asia to North America during the eve of the Mesozoic Era

67 million years ago a raptor named Acheroraptor temertyorum roamed Montana’s famed Hell Creek Formation. Prior to the discovery of Acheroraptor there was little evidence that dromaeosaurids (raptors) lived in the area. Known for the longest time only from its teeth, Acheroraptor helps fill out an already rich ecosystem complete with the terrifying Tyrannosaurus, the horned Triceratops and armoured Ankylosaurus. While Acheroraptor sharpens the picture for late Cretaceous biodiversity in the region, it also raises another fascinating question. You seeAcheroraptor is more closely related to a raptor half way around the world than it is to anything in North America!

A Curious Cretaceous Migration
When palaeontologists and co-authors, David Evans, Phil Currie and Derek Larson, studied the snout of Acheroraptor, they discovered that it was seemingly related to one of the world’s most famous raptors, Velociraptor. Interestingly, Velociraptor is found in Asia, in places like China and Mongolia. This development suggests that up until the eve of the Mesozoic Era, dinosaurs were still traversing the globe, joining and altering ecosystems along the way.

A Fitting Namesake
Acheroraptor temertyorum
was not only found and co described by two ROM palaeontologists, it also shares its name with two great ROM ambassadors. While “acheoraptor”, meansAcheron Plunderer, “temertyorum” is a nod toJames and Louise Temerty, incredible supporters of palaeontology at the ROM and the museum itself.

Fittingly, the Acheroraptor temertyorum specimen will be on display in the James and Louise Temerty Galleries of the Age of Dinosaur into the new year.

Palaeo Reactions!

More info

Image sources

  1. Acheroraptor temertyorum feast on a Triceratops carcass while Tyrannosaurus rex waits near by. Julius Cystoni, 2013.
  2. Acheroraptor temertyorum recreation. By Emily Willoughby, (e.deinonychus@gmail.com, emilywilloughby.com) (Own work) [CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons
  3. Snout and teeth of Acheroraptor temertyorum. Royal Ontario Museum, 2013.

Written by @kironcmukherjee. Last update: December 18, 2013.

Predatory ‘king of gore’ dinosaur discovered

A new super-predator dinosaur that roamed the Earth 80 million years ago has been discovered in southern Utah.

It was closely related to its slightly larger relative, Tyrannosaurus rex, but lived earlier, making it the largest living land predator of its time.

Growing to about 30ft (9m) long, the predator has been named Lythronax argestes which means “king of gore”.

The research, published in the journal Plos One, highlights once more that the age of discovery is far from over.

The team also hopes this new find will help uncover what the climate was like towards the end of the age of dinosaurs.

"It’s always exciting to find new species but what’s really significant is what these species tell us about their ancient world," said Randall Irmis, co-author of the study at the Natural History Museum of Utah, US.

"This was a very different place 80 million years ago. It was a very lush, wet, tropical environment and there were no polar ice caps at the time."

Short snout

First discovered in 2009, the partial skeleton included a number of bones from the skull and some from the rest of the body. The fossils were then excavated and studied in the lab.

The new discovery was closely related to T. rex and shows that similar features evolved 10 million years earlier than previously thought.

Lythronax had a short and narrow snout and forward slanting eyes. Like its evolutionary relative, it had a head full of sharp teeth and was a ferocious predator, the largest of its ecosystem.

The team also uncovered the most complete fossils of another named species of Tyrannosaur - Teratophoneus curriei. It was previously only known from a few skull bones but the team now have more than 70% of its skeleton.

"There’s a whole diversity of different branches of the Tyrannosaur family tree that are waiting to be found out there," Dr Irmis told BBC News.

It was previously unclear why there were so many different Tyrannosaurid species present in a similar area, as the animals were able to move around freely. The palaeontologists believe this was due to a changing of sea level.

"We think that when the sea level was high it was isolating areas in western North America that caused different species to evolve in isolation and that’s why we’re finding so many different species," added Dr Irmis.

He explained that the creature had been named the “King of Gore” because of its super-predator status. The second part of its name “argestes” comes from Greek poet Homer’s naming of a south-westerly wind.

"Tyrannosaurids were the really large predators in their ecosystem. It’s fairly certain based on what we can see on their skull, teeth and body size they probably ate whatever they could fit in their mouths," added Dr Irmis.

Apex predator

Another research member of the team, Joseph Sertich of the Denver Museum of Nature and Science, US, explained that the back of its skull was very wide which gave it good hunting eyes.

"One of the things that makes T. rex different from other dinosaurs is that it is able to look forward, it has binocular vision. Lythronax had that feature as well, its field of view could overlap which probably made it a better hunter,” Dr Sertich told BBC News.

"It was the apex predator of it’s time. It was the oldest advanced Tyrannosaur of its group, which is quite surprising.

"This is the tip of the iceberg. It’s amazing what we’re finding in southern Utah right now. You can walk over some of the hills and find fossils littering the sides of the slopes," he added.

Mike Benton at the University of Bristol, UK, who was not involved with the study, said the new find was important for understanding patterns of evolution of the Tyrannosaurids.

"Previously, Tyrannosauri origins were uncertain, whether in Asia or North America, and the new find tends to suggest a mainly North American evolution for the group.

(Source: BBC, via shychemist)

Skull of Lythronax

A remarkable new species of tyrannosaur has been unearthed in Grand Staircase-Escalante National Monument (GSENM), southern Utah.  The huge carnivore inhabited Laramidia, a landmass formed on the western coast of a shallow sea that flooded the central region of North America, isolating western and eastern portions of the continent for millions of years during the Late Cretaceous Period, between 95-70 million years ago. The newly discovered dinosaur, belonging to the same evolutionary branch as the famous Tyrannosaurus rex, was announced today in the open-access scientific journal PLoS ONE and unveiled on exhibit in the Past Worlds Gallery at the Natural History Museum of Utah at the Rio Tinto Center in Salt Lake City, Utah.

Among tyrannosaurs, a group of small to large-bodied, bipedal carnivorous dinosaurs including T. rex that lived during the Jurassic and Cretaceous periods, the newly discovered species, Lythronax argestes, possesses several unique features, a short narrow snout with a wide back of the skull with forward-oriented eyes.  Lythronax translates as “king of gore,” and the second part of the name, argestes, refers to its geographic location in the American Southwest. Previously, paleontologists thought this type of wide-skulled tyrannosaurid only appeared 70 million years ago, whereas Lythronax shows it had evolved at least 10 million years earlier.
The study, funded in large part by the Bureau of Land Management and the National Science Foundation, was led by Dr. Mark Loewen, research associate at the Natural History Museum of Utah, and adjunct assistant professor in the Department of Geology and Geophysics at the University of Utah.  Additional collaborative authors include Dr. Randall Irmis (Natural History Museum of Utah and Dept. of Geology and Geophysics, University of Utah), Dr. Joseph Sertich (Denver Museum of Nature & Science), Dr. Philip Currie (University of Alberta), and Dr. Scott Sampson (Denver Museum of Nature & Science).  The skeleton was discovered by BLM employee Scott Richardson, and excavated by a joint Museum-GSENM team.

Lythronax lived on Laramidia, along the western shores of the great seaway that separated North America; this landmass hosted a vast array of unique dinosaur species and served as the crucible of evolution for iconic dinosaur groups such as the horned and duck billed dinosaurs.  This study also indicates that tyrannosaurid dinosaurs (the group of tyrannosaurs that includes T. rex) likely evolved in isolation on this island continent. Lythronax stands out from its contemporaries in having a much wider skull at the eyes and a narrow short snout, similar to its relative T. rex, which lived 10-12 million years later.  Dr. Mark Loewen, the study’s lead author, noted, “The width of the back of the skull of Lythronax allowed it to see with an overlapping field of view—giving it the binocular vision— very useful for a predator and a condition we associate with T. rex.”  Previously, paleontologists thought this type of wide-skulled tyrannosaurid only appeared ~70 million years ago, whereas Lythronax shows it had evolved at least 10 million years earlier

Paleontologists have recently determined that the dinosaurs of southern Laramidia (Utah, New Mexico, Texas, and Mexico), although belonging to the same major groups, differ at the species level from those on northern Laramidia (Montana, Wyoming, the Dakotas, and Canada).  Lythronax and its tyrannosaurid relatives on southern Laramidia are more closely related to each other than the long snouted forms from northern Laramidia. Dr. Joseph Sertich, a co-author of the study, stated that, “Lythronax may demonstrate that tyrannosaurs followed a pattern similar to what we see in other dinosaurs from this age, with different species living in the north and south at the same time.”

These patterns of dinosaur distribution across Laramidia lead the researchers to ask what might have caused the divisions between the north and south, given that an enterprising dinosaur could have walked from Alaska to Mexico if given enough time.  Dr. Randall Irmis, a study co-author, explained that by analyzing the evolutionary relationships, geologic age, and geographic distribution of tyrannosaurid dinosaurs, the team determined that “Lythronax and other tyrannosaurids diversified between 95-80 million years ago, during a time when North America’s interior sea was at its widest extent.  The incursion of the seaway onto large parts of low-lying Laramidia would have separated small areas of land from each other, allowing different species of dinosaurs to evolve in isolation on different parts of the landmass.” As the seaway gradually retreated after 80 million years ago, these differences in dinosaur species may have been reinforced by climate variations, differences in food sources (different prey and plants), and other factors.  This hypothesis explains why the iconic Late Cretaceous dinosaurs of western North America are so different from those of the same age on other continents.

A Treasure Trove of Dinosaurs on the Lost Continent of Laramidia

Lythronax was discovered in Grand Staircase-Escalante National Monument (GSENM), which encompasses 1.9 million acres of high desert terrain in south-central Utah.  This vast and rugged region, part of the National Landscape Conservation System administered by the Bureau of Land Management (BLM), was the last major area in the lower 48 states to be formally mapped by cartographers.  Today GSENM is the largest national monument in the United States.  Co-author Dr. Scott Sampson proclaimed that, “Grand Staircase-Escalante National Monument is the last great, largely unexplored dinosaur boneyard in the lower 48 states.” 

During the past fourteen years, crews from the Natural History Museum of Utah, GSENM, the Denver Museum of Nature & Science, and several other partner institutions (for example, the Raymond Alf Museum of Paleontology and Utah Geological Survey) have unearthed a new assemblage of more than a dozen species dinosaurs in GSENM.  In addition to Lythronax, the collection includes a variety of other plant-eating dinosaurs—among them duck-billed hadrosaurs, armored ankylosaurs, dome-headed pachycephalosaurs, and two other horned dinosaurs, Utahceratops and Kosmoceratops—together with carnivorous dinosaurs great and small, from “raptor-like” predators such as Talos, to another large tyrannosaur named Teratophoneus. Amongst the other fossil discoveries are fossil plants, insect traces, snails, clams, fishes, amphibians, lizards, turtles, crocodiles, and mammals. Together, this diverse bounty of fossils is offering one of the most comprehensive glimpses into a Mesozoic ecosystem.  Remarkably, virtually all of the identifiable dinosaur remains found in GSENM belong to new species. 

Dr. Philip Currie, another co-author, stated that, “Lythronax is a wonderful example of just how much more we have to learn about with world of dinosaurs. Many more exciting fossils await discovery in Grand Staircase-Escalante National Monument.”

Study Summary

Dinosaurs were the dominant members of terrestrial ecosystems during the Mesozoic. However, the pattern of evolution and dispersal of these groups and other terrestrial vertebrates during the end of the Mesozoic remains poorly understood. We report the discovery of the earliest member of the group of large-bodied tyrannosaurs that led to Tyrannosaurus rex and illustrate that this clade diversified during the Late Cretaceous on the island continent of western North America and later dispersed to Asia. Our new phylogenetic analysis of tyrannosaurid dinosaurs reveals a previously unrecognized common pattern of diversification among Late Cretaceous vertebrates (e.g., turtles, crocodylians, ceratopsians), and we hypothesize that this pattern was directly linked to sea level-related isolation during the last 15-20 million years of the Mesozoic. Utilizing new data from a new 80-million year old Utah tyrannosaurid (Lythronax), new material of another Utah taxon (Teratophoneus), a novel and comprehensive phylogenetic analysis of theropod dinosaurs, and a novel quantitative biogeographic analysis, our results indicate that tyrannosaurid dinosaurs and other non-marine tetrapods originated in isolation on western North America (Laramidia) following separation from eastern North America (Applalachia) by incursion of the Cretaceous Interior Seaway, diversified in isolated basins during maximum extent of the seaway, and dispersed across western North America and into Asia only after a major drop in sea level near the end of the Cretaceous.

Fact Sheet: Major Points of the Paper

             (1) A remarkable new species of tyrannosaur, Lythronax argestes, has been unearthed in Grand Staircase-Escalante National Monument, southern Utah.

            (2) Lythronax is distinguished by a number of unique features, including a relatively narrow short snout with a wide back of the skull that would have resulted in binocular vision.

            (3) At 80 million years old, Lythronax is the geologically-oldest tyrannosaurid dinosaur ever discovered (Tyrannosauridae is the group of tyrannosaurs most closely related to T. rex; the really large-bodied forms with small arms.  Earlier tyrannosaurs were much smaller and more lightly built).

            (4) The fact that the geologically-oldest tyrannosaurid (Lythronax) is most closely related to the geologically-youngest tyrannosaurids (T. rex and Tarbosaurus at 70-66 million years old) indicates that most of the group must have diversified prior to 80 million years ago, so there are a lot of undiscovered tyrannosaurids out there waiting to be found.

            (5) This diversification of tyrannosaurids prior to 80 million years ago appears to correlate with a time of high sea levels, which may have isolated tyrannosaurids in different pockets of Laramidia, allowing them to differentiate and diverge into separate lineages (separate branches of the family tree).

            (6) This seems to be a common pattern for many Laramidian Late Cretaceous vertebrate animals, so sea levels may have played an important role in explaining why we are finding so many different species in each Laramidian basin in rocks from 80-74 million years old.

            (7) Our analysis indicates that tyrannosaurids originated in northern Laramidia (western North America), with multiple species moving into southern Laramidia over time, and some species immigrating to Asia towards the end of the Cretaceous (between 75-70 million years ago).

Study Design

  • Our comparison of the bones with all other known tyrannosaurid dinosaurs indicate that the new tyrannosaurid possessed unique features of the upper jaw (maxilla), snout, and side of the skull.
  • On the basis of these features, the scientific team named it a new genus and species of tyrannosaurid dinosaur, Lythronax argestes (translating to “gore king from the southwest”).
  • Lythronax is particularly notable for its slender snout but very wide back of the skull, features shared only with Tyrannosaurus rex and its close cousin Tarbosaurus bataar.
  • To reconstruct the evolutionary relationships (family tree) of Lythronax, we analyzed 501 skeletal features for 54 different species of carnivorous dinosaurs, and discovered that Lythronax is most closely related to Tyrannosaurus rex and Tarbosaurus bataar.
  • We then used this family tree and information about the geologic age and geographic location of different tyrannosaurid dinosaurs to reconstruct the biogeography of the group – that is, the evolution of their distribution across different continental landmasses.

New Dinosaur Name: Lythronax argestes

  • The first part of the name, Lythronax, (LYE-thro-nax) can be translated as the “king of gore” or “gore king” in reference to its large teeth and carnivorous lifestyle. The second part of the name argestes (ar-GES-tees) comes from the poet Homer’s southwest wind, in reference to the southwestern geographic location of the specimen.

Size

  • Lythronax was approximately 24 feet (8 meters) long and weighed around 2.5 tonnes.

Relationships

  • Lythronax belongs to a group of carnivorous dinosaurs called “tyrannosaurids,” the same group as the famous Tyrannosaurus rex

Anatomy

  • Lythronax was a two legged carnivore, the largest carnivore in its ecosystem.
  • Like other tyrannosaurid dinosaurs, Lythronax had a large head full of sharp teeth. 

Age and Geography

  • Lythronax lived during the Campanian stage of the Late Cretaceous period, which spanned from approximately 84 million to 70 million years ago.  This animal lived about 80 million years ago.
  • Lythronax lived in a swampy, subtropical coastal setting on the “island continent” of western North America, known as “Laramidia.” 
  • Lythronax represents the earliest member of the tyrannosaurid group from Laramidia.
  • During the Late Cretaceous, the North American continent was split in two by the Western Interior Seaway.  Western North America formed an island continent called Laramidia, stretching from Mexico in the south to Alaska in the north.
  • Lythronax is a member of a group or relatively short snouted tyrannosaurs that were restricted to the southern part of Laramidia at the same time long snouted tyrannosaurs were living in the northern parts of Laramidia. This finding strong evidence of dinosaur provincialism on Laramidia—that is, the formation of northern and southern dinosaur assemblages during a part of the Late Cretaceous.

Discovery

  • Lythronax was found in a geologic unit known as the Wahweap Formation, abundantly exposed in GSENM, southern Utah.
  • The Lythronax discovery site is in the southern part of BLM-administered Grand Staircase-Escalante National Monument (GSENM) in Kane County, northeast of Big Water, Utah.
  • Lythronax was first discovered by BLM employee Scott Richardson in 2009.  Scott also found the first specimen of Kosmoceratops, a bizarre horned dinosaur from GSENM.
  • Lythronax specimens are permanently housed in the collections and on public display at the Natural History Museum of Utah in Salt Lake City, Utah.
  • These discoveries are the result of a continuing collaboration between the Natural History Museum of Utah, the Denver Museum of Nature & Science, and the Bureau of Land Management.

Excavation

  • The skeleton of Lythronax was excavated in March and May of 2009 by Natural History Museum of Utah crews in in collaboration with paleontologists from GSENM.
  • The bones of Lythronax that were discovered include parts of the skull (maxilla, nasal, jugal, quadrate, frontal, laterosphenoid, palatine, dentary, splenial, surangular, prearticular), hips (pubis), and leg (tibia, fibula, metatarsals) and tail (chevron).
  • Other fossils found along with Lythronax at the site include parts of turtle shell, crab claws, leaf impressions, and a few molluscs.  The bizarre horned dinosaur Diabloceratops eatoni was recovered from nearby rocks of the same age.

Preparation

  • It required approximately 10 months to fully prepare all of the bones of Lythronax.
  • Nearly all preparation was done by NHMU volunteers Marilyn Harris, Jerry Golden, and Randy Johnson.

Other

  • The fossil record of tyrannosaurid dinosaurs from the southern part of Laramidia has been very poorly known.  The discovery of this new dinosaur in Utah helps to fill a major gap in our knowledge.
  • Lythronax is part of a previously unknown assemblage of dinosaurs discovered in GSENM over the past 12 years.
  • The skull of Lythronax is on permanent display at the Natural History Museum of Utah.
  • The Bureau of Land Management manages more land—253 million acres—than any other federal agency, and manages paleontological resources using scientific principles and expertise. http://newsdesk.nhmu.utah.edu/sites/default/files/NHMU%20Lythronax%20mount%20photo%20by%20Mark%20Loewen.JPG
  • http://newsdesk.nhmu.utah.edu/sites/default/files/Wahweap%20coastline%20tyrannosaur%20with%20sky%20by%20Andrey%20Atuchin.jpg
  • http://newsdesk.nhmu.utah.edu/sites/default/files/Fleshed%20out%20head%20by%20Gary%20Staab.jpg
  • http://newsdesk.nhmu.utah.edu/sites/default/files/Lythronax%20skull%20reconstruction%20by%20Lukas%20Panzarin.jpg

(Source: sciencetoastudent)

Tags: Animals Bat

ENDLING
Endling is a word for an individual animal that is the last of its species or subspecies.

1912 - 2012

(Source: chalkandwater, via geekmehard)

thefingerfuckingfemalefury:

logicalabsurdity:

vsiorc:

Skeleton thought to be Etruscan warrior prince is actually a warrior princess

Prehistoric cave prints show most early artists were women

so what feminists have been saying for years and years is true. women have always been involved in hunting, have been warriors and have made art. women have been inventors and made great discoveries… and women experts are finally breaking through the sexism to get the facts heard.

"But bone analysis revealed the prince holding the lance was actually a 35- to 40-year-old woman, whereas the second skeleton belonged to a man.

Given that, what do archaeologists make of the spear?

"The spear, most likely, was placed as a symbol of union between the two deceased," Mandolesi told Viterbo News 24 on Sept. 26.

Weingarten doesn’t believe the symbol of unity explanation. Instead, she thinks the spear shows the woman’s high status.

Their explanation is “highly unlikely,” Weingarten told LiveScience. “She was buried with it next to her, not him.”

Gendered assumptions

The mix-up highlights just how easily both modern and old biases can color the interpretation of ancient graves.

In this instance, the lifestyles of the ancient Greeks and Romans may have skewed the view of the tomb. Whereas Greek women were cloistered away, Etruscan women, according to Greek historian Theopompus, were more carefree, working out, lounging nude, drinking freely, consorting with many men and raising children who did not know their fathers’ identities.

Instead of using objects found in a grave to interpret the sites, archaeologists should first rely on bone analysis or other sophisticated techniques before rushing to conclusions, Weingarten said.

"Until very recently, and sadly still in some countries, sex determination is based on grave goods. And that, in turn, is based almost entirely on our preconceptions. A clear illustration is jewelry: We associate jewelry with women, but that is nonsense in much of the ancient world," Weingarten said. "Guys liked bling, too.""

had prints are cave-art signatures…

"This is a surprise, since most archaeologists have assumed it was men who had been making the cave art. One interpretation is that early humans painted animals to influence the presence and fate of real animals that they’d find on their hunt, and it’s widely accepted that it was the men who found and killed dinner.

But a new study indicates that the majority of handprints found near cave art were made by women, based on their overall size and relative lengths of their fingers.

"The assumption that most people made was it had something to do with hunting magic," Penn State archaeologist Dean Snow, who has been scrutinizing hand prints for a decade, told NBC News. The new work challenges the theory that it was mostly men, who hunted, that made those first creative marks. 

Another reason we thought it was men all along? Male archeologists from modern society where gender roles are rigid and well-defined — they found the art. “[M]ale archaeologists were doing the work,” Snow said, and it’s possible that “had something to do with it.”  “

-MANIACAL LAUGHTER-

I can’t stop giggling over how DESPERATE male archelogists are to try and make up some bullshit to explain away the idea of women being warriors and hunters in the past

(via geekmehard)