“Island Hateg”, by Sergey Krasovskiy (~atrox1)

HatzegopteryxBalaur and some kind of unlucky nodosaurid

“The authors estimated the size of Hatzegopteryx by comparing the humerus fragment, 236 mm (9.3 in) long, with that of Quetzalcoatlus, of which specimen TMM 41450-3 has a 544 mm (1 ft 9.4 in) long humerus. Observing that the Hatzegopteryx fragment presented less than half of the original bone, they established that it could possibly have been "slightly longer” than that of Quetzalcoatlus. They noted that the wing span of the latter had in 1981 been estimated at eleven to twelve metres, while earlier estimates had strongly exceeded this at fifteen to twenty metres. From this they concluded that an estimate of a twelve meter wing span for Hatzegopteryx was conservative “if its humerus was indeed somewhat longer than that of Q. northropi”. In 2003 they moderated the estimates to a close to twelve metres wing span and an over 2.5 m (8 ft 2 in) skull length.[3] In 2010 Mark Witton e.a. stated that any appearance that the Hatzegopteryx humerus was bigger than TMM 41450-3 had been caused by a distortion of the bone after deposition and that the species thus likely had no larger wingspan than Quetzalcoatlus, today generally estimated at ten to eleven metres.[4]Wikipedia.

More Pterosaurs! I wanted to play with analogous displays and coloring with this guy.I also added a dash of reptile in there just for good measure.

*DISCLAIMER: I’m not a paleo artist. So the exploration of  sexual dimorphism, displays, crests, waddles, patterns, etc  are purely speculatory but feel free to start your sentences with “technically, actually, scientifically, or the ever favorite looks like David Peters ” in 3,2,1

The Hateg basin wing, Hatzegopteryx (2002)

Phylum : Chordata
Class : Reptilia
Order : Pterosauria
Family : Azhdarchidae
Genus : Hatzegopteryx
Species : H. thambema

  • Late Cretaceous (70 - 66 Ma)
  • 11 m wingspan and 100 kg (size)
  • Hunedoara county, Romania (map)

Hatzegopteryx poses a puzzle worthy of a TV detective show. To judge from this reptile’s incomplete remains, including pieces of its skull and humerus, Hatzegopteryx may have been the largest pterosaur that ever lived, with a wingspan possibly approaching 40 feet (compared to “only” 35 feet or so for the biggest known pterosaur, Quetzalcoatlus). Even the skull of Hatzegopteryx was gigantic, one reconstruction pegging it at over ten feet long, which would count as the biggest noggin of any non-marine creature in earth’s history.

So what’s the mystery? Well, apart from the elusive nature of Hatzegopteryx’s fossil remains–it’s a tricky business to reconstruct an extinct animal from only a handful of bones–there’s the fact that this pterosaur lived on Hatzeg Island, which was isolated from the rest of Europe during the late Cretaceous period. The dinosaurs that lived on Hatzeg Island, most notably Telmatosaurus and Magyarosaurus, were much smaller than their mainland contemporaries, an example of “insular dwarfism” (that is, creatures on small islands tend to evolve to small sizes, so as not to outgrow the available resources). Why would such a huge pterosaur have lived on an island populated by dwarf dinosaurs? Until more fossil evidence is uncovered, we may never know the answer for sure.

A pair of Eurazhdarcho trailing behind a lone Hatzegopteryx, snatching up anything that’s disturbed by the larger azhdarchid.

I just had to draw something involving these two after I read the TetZoo article on them, since I always think niche partitioning and how similar genera adapt to different lifestyles and such is really neat.

Please excuse the shoddy “plants”.

I made this my 6th All Your Yesterdays submission just for kicks.