#gobihadros

[randomanimaloftheday]

Day 173#: Gobihadros mongoliensis

Merry day two of Dino-December! Today's animal of the day is Gobihadros mongoliensis!

Image credit: cisiopurple on DeviantArt

Gobihadros mongoliensis was a species of hadrosaur that lived in what is now Mongolia during the Late Cretaceous period. It was first discovered by a team of Mongolian and Japanese paleontologists during an expedition to the Batanshiree Formation that took place from 1993 to 2004. However, it wasn't until 2019 that Gobihadros was finally formally named and described by paleontologists Khishigjav Tsogtbaatar, David Bruce Weishampel, David Christopher Evans, and Mahito Watabe. Its genus is named after the famous Gobi Desert, and its species name is a reference to Mongolia, where it was found. Gobihadros was pretty basal as far as hadrosaurs go, but it did have several traits to set it apart from its relatives, such as uniquely shaped teeth and a conical spike-like claw on its first finger.

Image credit: PaleoNeolitic

This initial Gobihadros specimen was around 9.8 ft long, but was originally thought to have been a juvenile and not yet fully grown. This was proven correct when several much larger specimens of Gobihadros were later unearthed. The largest of these specimens was around 25 ft long when it was alive and had numerous abnormal calcium deposits on several of its bones. These calcium deposits are thought to be signs that the animal was suffering from calcium pyrophosphate deposition disease, which is when calcium buildups form crystal-like structures inside the body, usually near the joints, and cause severe pain. The presence of this disease, alongside the large size of the specimen, has led paleontologists to suspect that this individual may have been quite elderly.

[theantiazdarcho]

I hope everyone is having a nice Christmas Eve!

[a-dinosaur-a-day]

Trick or treat!

Gobihadros!

Please do not send me more trick or treat asks, I am only answering the ones I could not get to after I hit post limit last night, it is Nov 1st we have other shenanigans to attend to!

[extinctworld-ua]

Gobihadros

Gobihadros — рід базальних гадрозавроїдних динозаврів, що мешкали в Азії в пізньому крейдяному періоді на території сучасної формації Баян-Ширех (сеноман-сантон). Рід містить лише типовий вид Gobihadros mongoliensis. Його приблизна довжина становила 7,5 м.

Art by: @knuppitalism-with-ue

Повний текст на сайті "Вимерлий світ":

https://extinctworld.in.ua/gobihadros/

[strangebiology]

Duck-billed dinosaur skeleton from Gobi Desert is “virtually complete”

In the rocks and sands of the Mongolian Gobi Desert, the articulated skeleton of a hadrosaur has been waiting, intact, for tens of millions of years. The “virtually complete” fossil shows a nearly picture-perfect representation of how its bones fit together when it lived in the late Cretaceous.

First, a team member noticed a tiny protuberance of the end of a pelvis sticking out of a rock. Then the excavation team chipped away at the surrounding rocks until they uncovered a rare and precious find--the virtually complete skeleton of a brand new dinosaur. 

[a-dinosaur-a-day]

Round Two: Bisticeratops vs Gobihadros

Bisticeratops froeseorum

Artwork by sauriazoicillus, written by @zygodactylus

Name Meaning: Froese’s Dééł Náázíní Horned Face 

Time: 74 million years ago (Campanian stage of the Late Cretaceous) 

Location: Farmington Member, Kirtland Formation, New Mexico, United States 

Bisticeratops is an early Chasmosaurine, known from a partial skull found in the Kirtland Formation. Yet another of a largely growing number of Chasmosaurine taxa from the Campanian of North America, it appeared to resemble Pentaceratops, but was more closely related to later ceratopsians known from the Kirtland formation, as well as one unnamed taxon from the Almond Formation in Wyoming. Interestingly, Bisticeratops shows signs of bite marks from tyrannosaurids, which apparently had begun to heal prior to death. However, we do not know which tyrannosaurid may have left these marks - while the Kirtland Formation is a well studied environment, the Farmington Member has never yielded dinosaurian fossils before now, taking place earlier than the more famous De-Na-Zin of the formation. Like other iterations, the Kirtland was a coastal plain along the western interior seaway, preserving a muddy and sandy environment that would have been filled with a variety of subtropical plants. It is presumable that other dinosaurs lived here besides Bisticeratops and a tyrannosaurid - hadrosaurs, ankylosaurs, pachycephalosaurs, ornithomimosaurs, and dromaeosaurs would all have been possible members of this ecosystem based on the following and preceding ones from this formation.

Gobihadros mongoliensis

Artwork by KookaburraSurvivor, written by @zygodactylus

Name Meaning: Hadrosaur from the Gobi of Mongolia 

Time: 90 to 86 million years ago (Turonian to Coniacian stages of the Late Cretaceous)

Location: Upper Beds, Bayan Shireh Formation, Bayshin Tsav, Baynshire, Char Teeg, Khongil Tsav, Khoorai Tsav, Mongolia 

Gobihadros is an early almost-hadrosaur from the Bayan Shireh Formation, one of the rare environments preserving the evolution of dinosaurs during the start of the Late Cretaceous epoch - essentially, when the charismatic dinosaurs of the Latest Cretaceous, such as hadrosaurs, first evolved. Multiple specimens are known from throughout the formation, making Gobihadros the best known early hadrosauroid from Asia. Adults reached sizes of about 7.5 meters long, and it had as many as three teeth per position within the lower jaw (this is high even for early hadrosaurs, more similar to those of later taxa, indicating convergent/parallel evolution). It also still retained the conical thumb claw of earlier ornithopods like Iguanodon. An older individual of the species showed signs of calcium pyrophosphate deposition disease, a condition of age causing restriction in the joints and pain during movement. Gobihadros lived in a semi-arid plain environment littered with lakes and rivers, with meandering bodies of water draining into the sea on the coast of China. Flowering plants were present in this environment, as well as a wide variety of animal life - sharks, Azhdarchids, turtles, and other dinosaurs like Alectrosaurus (probably), a troodontid, Erlikosaurus, Caenagnathoids, Garudimimus, Graciliceratops, a possible Carcharodontosaur (which would be a late surviving species), Talarurus, and potentially many more species waiting to be formally named.

Bisticeratops or Gobihadros?

Bisticeratops

Gobihadros

Voting ended onMar 16, 2023

[a-dinosaur-a-day]

Kelumapusaura vs Gobihadros

Kelumapusaura (left) or Gobihadros (right)?

Kelumapusaura

Gobihadros

Voting ended onMar 9, 2023

Factfiles:

Artwork by Leonardo HerSan, written by @zygodactylus

Name Meaning: Reptile Shaman of the Red Earth 

Time: 73 to 69 million years ago (Campanian to Maastrichtian stages of the Late Cretaceous)

Location: Allen Formation, Patagonia, Argentina 

Kelumapusaura is another addition to the growing number of South American hadrosaurs, a radiation of this group that was previously considered unlikely but appears to have happened towards the very end of the Cretaceous period - thus showing that hadrosaurs reached almost every continent, except perhaps Australia! It was an average sized hadrosaur, reaching about 9 meters long, and as a member of the Kritosaurs it probably had enlarged nasal passages for sound production and communication. It would have lived in social groups, like other hadrosaurs. In the Allen Formation, Kelumapusaura lived in a coastal environment of fluvial plains, ephemeral lakes, tidal flats, and estuaries with extreme semiarid seasonality. Evaporites would accumulate in the arid seasons, only to be washed away as the wet season returned. Many dinosaurs are known from this formation: Aeolosaurus, Austroraptor, Bonapartesaurus, Bonapartenykus, Bonatitan, Lamarqueavis, Lapampasaurus, Limenavis, Menucocelsior, Niebla, Panamericansaurus, Patagopelta, Pellegrinisaurus, Quilmesaurus, Rocasaurus, and Willinakaqe. In addition, Kelumapusaura shared its home with pterosaurs such as Aerotitan, tuatarans, plesiosaurs, frogs, and a variety of mammals. 

Gobihadros mongoliensis

Artwork by KookaburraSurvivor, written by @zygodactylus

Name Meaning: Hadrosaur from the Gobi of Mongolia 

Time: 90 to 86 million years ago (Turonian to Coniacian stages of the Late Cretaceous)

Location: Upper Beds, Bayan Shireh Formation, Bayshin Tsav, Baynshire, Char Teeg, Khongil Tsav, Khoorai Tsav, Mongolia  Gobihadros is an early almost-hadrosaur from the Bayan Shireh Formation, one of the rare environments preserving the evolution of dinosaurs during the start of the Late Cretaceous epoch - essentially, when the charismatic dinosaurs of the Latest Cretaceous, such as hadrosaurs, first evolved. Multiple specimens are known from throughout the formation, making Gobihadros the best known early hadrosauroid from Asia. Adults reached sizes of about 7.5 meters long, and it had as many as three teeth per position within the lower jaw (this is high even for early hadrosaurs, more similar to those of later taxa, indicating convergent/parallel evolution). It also still retained the conical thumb claw of earlier ornithopods like Iguanodon. An older individual of the species showed signs of calcium pyrophosphate deposition disease, a condition of age causing restriction in the joints and pain during movement. Gobihadros lived in a semi-arid plain environment littered with lakes and rivers, with meandering bodies of water draining into the sea on the coast of China. Flowering plants were present in this environment, as well as a wide variety of animal life - sharks, Azhdarchids, turtles, and other dinosaurs like Alectrosaurus (probably), a troodontid, Erlikosaurus, Caenagnathoids, Garudimimus, Graciliceratops, a possible Carcharodontosaur (which would be a late surviving species), Talarurus, and potentially many more species waiting to be formally named.

DMM Round One Masterpost

[2whatcom-blog]

New Duckbill Dinosaur Appears to be like Sharp

dinosaur is difficult to seek out. I've beforehand laid blame on Jurassic Park for popularizing the concept paleontologists repeatedly discover gorgeous, intact, articulated dinosaur skeletons. The reality requires fairly a bit extra consolidant and annoyed queries alongside the strains of "Where's the rest of it?" However museums have their roles to play, too. We want to see dinosaurs absolutely restored - not simply the butt half of a skeleton - and this could depart us with the impression that discovering a crisp, full, and undistorted dinosaur occurs on a regular basis. Maybe "complete" is not a phrase we must always even use in reference to dinosaur fossils. It is typically troublesome to inform precisely what full is after taphonomy has taken its toll, discarding some laborious tissues in addition to the bonus comfortable tissue remnants all of us hope for. And because of this the anatomical facet of paleontology is at all times a comparative science, with new finds being in comparison with what's been seen earlier than. Lacking elements in a single skeleton may be substituted with bones from a relative as a working speculation and placeholder. And from time to time, a fortunate discover helps present extra grist for the osteological mill. Gobihadros mongoliensis, a duckbill dinosaur simply described by paleontologist Khishigjav Tsogtbaatar and colleagues, is a superb instance. In technical phrases, this roughly 100-million-year-old dinosaur is a "non-hadrosaurid hadrosauroid." Meaning it belongs to the better household of shovel-beaked herbivores generally often called duckbills, however lacks among the options that will place this dinosaur nearer to well-known favorites like Parasaurolophus and Edmontosaurus. In different phrases, Gobihadros is in between the extra Iguanodon-like ancestors of hadrosaurs and later species in each time and anatomy. The great set of stays described by Tsogtbaatar and coauthors drive house the purpose. Gobihadros is the primary dinosaur of its variety to be discovered within the Late Cretaceous of central Asia from in depth stays, together with an articulated cranium, offering a uncommon image of this veggiesaur and its relations. Not solely does Gobihadros appear to point out some convergent traits with later duckbills, indicating options of the jaws and hips developed greater than as soon as, however the hadrosaur additionally has a thumb spike just like its extra historic relations. This makes Gobihadros what specialists typically name a mosaic - an animal that has outstanding similarities to each earlier and later species from the identical group, but nonetheless on an evolutionary department of its personal as a substitute of slotted onto a straight line of progress. Reconstructed from snout to tail from a number of specimens, Gobihadros slides into the household tree alongside previously-named relations like Bactrosaurus and Gilmoresaurus. And so Gobihadros turns into an necessary level of comparability, maybe unlocking how hadrosaurs flourished and have become iconic elements of Late Cretaceous life. The dinosaurs themselves could not have recognized this for a wide range of causes, however, because of the hindsight granted to us 100 million years later, we are able to understand how this beautiful dinosaur match into hadrosaur historical past. Read the full article