Episode 506: Stegosaurus is the Most Worthwhile Dinosaur. A Stegosaurus simply bought for over $44 million; A model new burrowing dinosaur was present in a bunch; And a brand new iguanodontian which is essentially the most full dino present in Britain in 100 years.
Information:
- A Stegosaurus nicknamed Apex simply bought at public sale for $44.6 million, making it essentially the most priceless dinosaur skeleton ever bought supply
- There’s a brand new dinosaur, Fona herzogae, that appears to have been buried in a bunch in its burrow supply
- There’s a brand new iguanodontian dinosaur, Comptonatus chasei, which is essentially the most full dinosaur present in Britain in 100 years supply
- The Museum of Evolution in Denmark has a brand new Camarasaurus so as to add to its assortment of dinosaurs from Wyoming supply
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The dinosaur of the day: Jubbulpuria
- Noasaurid theropod that lived within the Late Cretaceous in what’s now Madhya Pradesh, India (Lameta Formation)
- Noasaurids are carefully associated to abelisaurids (which have quick arms) however they’d our bodies extra like different theropods, although there are variations within the heads relying on the subfamilies (some don’t have any tooth, some have loopy tooth)
- Small carnivore, across the similar measurement as Masiakasaurus, which is estimated to be about 2 m (6.6 ft) lengthy
- Walked on two legs, had quick arms, lengthy tail
- Based mostly on paleoart, had a protracted head and sharp tooth
- (Not many bones discovered, just some vertebrae)
- Jubbulpuria is now a junior synonym of one other dinosaur, Laevisuchus
- How did that occur?
- First, some fast historical past
- First reported dinosaur bones from India was in 1828, when British Military Captain W. H. Sleeman discovered tail bones with ball-and-socket joints, from the Late Cretaceous in what’s now Jabalpur (then “Jubbulpore”)
- Occurred earlier than Dinosauria was named
- However later the bones had been named Titanosaurus indicus
- Solely dinosaur bones till Matley and Bhattacharji got here alongside
- Fossils had been excavated in 1917 to 1919 by Charles Matley and Durgansanka Bhattacharji (Laevisuchus and Jubbulpuria)
- Since then, extra dinosaurs discovered (28 named species from India to date)
- Sort species of Jubbulpuria was Jubbulpuria tenuis
- Genus identify Jubbulpuria refers to the place the fossils the place discovered
- Species identify tenius refers to its nice or slender bones (skinny bones)
- Named by Huene and Matley in 1933 primarily based on two small vertebrae from the again space (dorsal area)
- Later research discovered the 2 bones got here from the tail as a substitute
- Numerous elements of predatory dinosaurs discovered within the Lameta Formation, in what was generally known as the “Carnosaur mattress”
- Huene and Matley described 9 species from 8 genera in 1933, primarily based on 32 containers of fabric
- Additionally described many leg bones that they couldn’t confer with any species however stated had been allosaurid or coelurosaurid theropods
- All discovered from one space, the “Carnosaur mattress”
- Bones had been “heaped collectively on this small area, with little regard to their unique relationship” (in accordance with Huene and Matley), all in an space about 20 sq. yards
- Stated they’d notes on the place the bones had been positioned within the Carnosaur mattress, however the notes haven’t been discovered
- Norman in 1990 discovered Jubbulpuria to be nomen dubium, and 2004 overview by Fernando Novas and others agreed
- That 2004 overview discovered that Laevisuchus indicus was a small abelisaurid, associated to Noasaurus and Masiakasaurus primarily based on the neck bones, and Jubbulpuria (controversial taxa) was identified from remoted vertebrae from the tail and in addition an abelisauroid
- Discovered all of the theropods from that Carnosaur mattress to be abelisauroids
- In 2011 Carrano and others recommended that Compsosuchus, Jubbulpuria, and Laevisuchus could all be the identical
- Sort species is Laevisuchus indicus
- Described by Friedrich von Huene and Charles Matley in 1933
- Genus identify Laevisuchus means “gentle crocodile”
- Genus identify is for the traditional Egyptian crocodile god, Soukhos
- Species identify means “Indian” (present in India)
- Laeviscuchus described in 1933 by Huene and Matley
- Based mostly on three cervicals (neck bones)
- However two of the bones went lacking (as of 2004)
- In 2012, one of many neck bones was re-found in three separate items in unmarked containers, together with different fragments on the Invertebrate Gallery of the Indian Museum
- Then one other neck bone was rediscovered in 2012/2013
- A part of one other lacking vertebrae additionally present in 2013 (items of each vertebrae lacking, and one neck bone nonetheless lacking)
- A 2024 overview of small theropods from the Late Cretaceous of India, by Dhananjay Mohabey and others, studied the three identified neck bones and again bone for Laevisuchus, in addition to the 2 tails bones for Jubbulpuria (in addition to different small theropods)
- Small theropods thought of to be underneath 5 m lengthy (underneath about 16 ft)
- Discovered the neck bones of Laevisuchus had been most like Masiakasaurus (not as a lot Noasaurus)
- Additionally described a brand new partial jawbone just lately collected from the Lameta Formation
- In all probability belongs to a noasaurid, presumably Laevisuchus
- New dentary described has options in widespread with Masiakasaurus, so appears to belong to a noasaurid
- Designated a lectotype for Laevisuchus (an almost full neck vertebra)
- When first described, no kind specimen of Laevisuchus
- One neck vertebra was the de facto kind specimen, as a result of it was the one one actually described and for a very long time the one one discovered within the Geological Survey of India collections
- Additionally referred different vertebrae
- Named one of many neck bones because the lectotype as a result of it was essentially the most full and greatest preserved
- And stated the 2 tail vertebrae of Jubbulpuria is probably going Laevisuchus
- Laborious to match the options however they’re all delicate and have skinny partitions, the dimensions is constant to belonging to the identical particular person, primarily based on evaluating to a Masiakasaurus specimen, and authors stated primarily based on no duplication, wanting equally, being the suitable measurement, and all present in the identical restricted space means it possible belongs to the identical species
- The identify Laevisuchus appeared first, so protecting that identify and Jubbulpuria turns into a junior synonym
- Lived in an space with numerous vegetation, and was a tropical lagoon
- Different dinosaurs that lived across the similar time and place embrace the titanosaur Jainosaurus, the abelisaurs Indosaurus and Indosuchus (and lots of different theropods)
- Different animals that lived across the similar time and place embrace snakes, crocodylomorphs, turtles, mammals, and mollusks
Enjoyable Reality:
A brand new research discovered that within the Jurassic, early mammals had longer lifespans and took longer to develop
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