The specific location of the discovery is not known today, but it is practically certain that the fossil was obtained from the sediments of the Hastings Beds Formation, which date back to the early days. It is interesting that one of the discoverers of the dinosaur, lka and amatrsk, studied this fossil paleontologist Gideon Algernon Mantell (17901852). The bite of Beckles’ force was thus the fossil bone of one of the dinosaur’s forelegs, and Mantell examined it first.
Confusion around the fossil
In one of the late Friday, the material was formally named as a new species of the genus Pelorosaurus (now a formally valid but somewhat problematic genus of sauropod dinosaur from early Western Europe), namely P. becklesii. Mantell thus gave up the number of men by choosing a species name, which ensured the preservation of these fossils for all ages.
An illustration from a newspaper newspaper from the end of 1857, depicting Samuel H. Beckles, the breath of the Dorset excavation. Beckles received the Haestasaur fossils two years later from the outskirts of Hastings and provided them for research to Gideon A. Mantell, one of the pioneers of the study of Mesozoic dinosaurs. Unfortunately, the exact location of the discovery at the bag is not known today.
And until 1888, this find aroused only minimal interest in the village, mainly due to the fact that it remained in the private collection of Beckles itself and only its cast was available to other researchers (which was placed in the exposition of the British Sales Museum under the collection name BMNH R28701). The British paleontologist Richard Lydekker (18491915) first examined this exhibit in a changing year, and although he mistaken the site for its discovery for the Isle of Wight, he drew attention to an interesting example of a scientific community.
Three years later, the London Museum bought the fossil itself for the collections. In order not to end the confusion, in 1889 he set a new name for the American fossil paleontologist Othniel Charles Marsh (1831-1899), but his Morosaurus becklesii did not get it. Lydekker continued to report this finding in the following years as a species of Cetiosaurus brevis.
It took another 40 years, before German paleontologist Friedrich von Huene (18751969) to argue that Hastings fossils actually represent a new and as yet undescribed genus of sauropod dinosaur. Sm did not name her bag and reported on him as Gen. (?) becklesii, according to him, it was supposed to be an unknown representative groups Camarasaurinae or Brachiosauridae. It was not until 1990 that the American paleontologist John Stanton McIntosh (1923-2015) proved that he was in fact not a member of the same genus and species as the taxon Pelorosaurus conybeari.
Name by line
Konen in 2015, the trio of paleontologists Paul Upchurch, Philip D. Mannion and Michael P. Taylor have definitively shown that Beckles’ sauropod differs in many anatomical features from P. conybeari and is not its sister species. Therefore, they determined a new genus, Haestasaurus, after the name of the legendary ancient Anglo-Saxon lizard (Haesta), from which it derives its name and the town of Hastings.
The holotype of the species Haestasaurus becklesii was discovered in the altered sediments of the Hastings Beds (and the Wealden Supergroup), which originate from the peoples of the geological bases of berrias and valangin (about 140 million years). The fossil deposited under the collection designation NHMUK R1870 includes the skeleton of the lion of the forelegs, the sacral bones of the ankle, the ulna and the incisor.
The NHMUK R1868 specimen was part of the same block of rock and includes a natural imprint in the elbow area of the sauropod dinosaur. Metacarpal bone fossils (NHMUK R1869) were found in the same force in Beckles’ sbrce, but due to their size they cannot fly the haestasaura holotype. Due to the limited amount of skeletal material, it is not possible to place this sauropod with certainty, but it was probably the basal (developmental primitive) representative of the Titanosauria clade, or even the basal representative of the Macronaria group.
It could thus be one of the last major developers of primitive representatives of this important group of long-necked creeping dinosaurs. Among his closest relatives were, for example, the North American genus Camarasaurus, according to the African genus Janenschia or the South American genus Tehuelchesaurus. It was very small sauropodreaching lengths perhaps only in the range of 6 and 7 meters, if they had a similar shape of the body first as the change Camarasaurus.
To this end, he had the dimensions of a haestasaur’s bone, such as his 59.9 cm long humerus, only 42.1 cm long ulna and 40.4 cm long radius. The specimen of the species Haestasaurus becklesii was undoubtedly a very small representative of sauropod dinosaurs.
The treasure was imprinted on the bone
But to the very most important aspect of this taxon, which is a very well-preserved fossil imprint. It was preserved isolated together with fossils of the limb and measuring 21.5 19.5 cm. For paleontologists, it proved to be a real treasure, but its values were practically unknown for a long time.
Since the visible surface of the clamp is convex, it is not likely to be the fossil itself, but more about her sales imprint. Due to the time of fossil discovery, it is probably the first fossil imprint of dinosaurs to be found. Reginald Walter Hooley (1865-1923), a businessman and amateur paleontologist, expressed the hypothesis of their origin and origin more than a century ago.
Much more detailed information was published in the summer, when Communications Biology published a study of birds that used the modern method of laser-induced fluorescence (LSF) to study fossils. They were literally able to see the humor of the sauropod dinosaur in much greater detail, not anyone before them.
The texture of the fossil skin was similar to that known to two paleontologists in some late Jurassic and late Sauropods, which also had similar delicate fossils of the preservation (eg Tehuelchesaurus benitezii, Diplodocus sp., Barosaurus sp., Apatosaurus sp. Or sauropod embryos from argentinsk locality Auca Mahuevo).
Reconstruction of Piblinho emergence of macronarian sauropoda species Tehuelchesaurus benetezii, which during the late Jurassic to the land of Argentina. This species was probably one of the closest known European haestasaurs, although there were a total of two.
Hexagonal clamps with a diameter of 7 to 35 millimeters were most often formed in the haestasaura. In one place, however, all changed significantly, which means that it was the area of the elbow, where it had to be due to the flexibility of these limbs free and spring.
But what is most interesting is the discovery of dinosaurs with hitherto unknown horsepower structures in the form of some outer and papillae on the clamps themselves. They represented his grandchildren, covering the dinosaur during his life and rejoicing in the descent of the Neosauropoda most likely to mask or thermoregulate. It is thus possible that these structures have more than one at a time, especially then they change the right body temperature and also the protective or signal color.
Of course, we still don’t know anything detailed about the similar physiological and ethological features of the early life of the sauropod. As is usual with discoveries of this kind, there are often more new questions than definitive answers. But they are very important to us, or they push the boundaries of our knowledge of the two worlds of Mesolithic dinosaurs, a big piece forward.
lnek was created for Dinosaur blog by Vladimir Socha and was edited. The original version, including a rich reference index can be found here.