The discovering makes Meghalaya the fifth state in India after Gujarat, Madhya Pradesh, Maharashtra, and Tamil Nadu to report Sauropod bones having titanosaurian affinity.

Researchers have recognized fossil bone fragments of long-necked dinosaurs known as sauropods, courting again to about 100-million-years from an space round West Khasi Hills District in Meghalaya.

The yet-to-be-published findings have been made throughout a latest discipline journey by researchers from the Geological Survey of India’s Palaeontology division in North-East.

The GSI researchers famous that that is the primary file of sauropods of possible Titanosaurian origin found within the area.

Sauropods had very lengthy necks, lengthy tails, small heads relative to the remainder of their physique, and 4 thick, pillar-like legs. They’re notable for the large sizes attained by some species, and the group contains the biggest animals to have ever lived on land.

The discovering makes Meghalaya the fifth state in India after Gujarat, Madhya Pradesh, Maharashtra, and Tamil Nadu and the one state within the North-East to report Sauropod bones having titanosaurian affinity, they mentioned.

Titanosaurs have been a various group of sauropod dinosaurs, together with genera from Africa, Asia, South America, North America, Europe, Australia and Antarctica.

“Dinosaur bones from Meghalaya have been reported by GSI in 2001 however they have been too fragmentary and ill-preserved to grasp its taxonomic identification,” mentioned Arindam Roy, Senior Geologist, Palaeontology Division, GSI. “The current discover of bones is throughout fieldwork in 2019-2020 and 2020-21. The final go to of the staff was in February 2021. The fossils are presumably of Late Cretaceous, about 100 million years in the past.”

He famous that the best-preserved fossils are limb bones, including the kind of curvature, improvement of lateral and proximal margins of the partially preserved bone are indicative of it being a humerus bone.

He, nonetheless, famous that the conclusions are drawn from preliminary research and detailed work is occurring.

The bone fragments have been collected from poorly sorted, purplish to greenish very coarse-grained arkosic sandstone interlaid with pebbly beds. Greater than twenty-five disarticulated, largely fragmentary bone specimens have been recovered, that are of various sizes and happen as remoted specimens however a few of them have been present in shut proximity to one another, the researchers mentioned.

Taxonomic identification as much as genus stage is troublesome as a result of poorly preserved, incomplete, fragmentary nature of the bones and many of the recovered bones are partially petrified and partially changed, they mentioned.

Due to this fact, solely three of the best-preserved ones might be studied. The most important one is {a partially} preserved limb bone of 55 centimetres (cm) lengthy. It’s comparable with the typical humerus size of titanosaurids.

Robustness of the bone, the distinction in curvature within the lateral margins and the proximal border being comparatively straight, are among the morphological characters that trace on the titanosaurid affinity, in keeping with the researchers.

One other incomplete limb bone measuring 45cm in size can also be comparable with the limb bones of titanosauriform clade, they mentioned.

“The abundance of bones recovered throughout the current work and particularly the discovering of few limb bones and vertebrae having taxonomic characters of titanosauriform clade are distinctive,” Roy mentioned. “The file of the sauropod assemblage of possible titanosaurian affinity from Meghalaya extends the distribution and variety of vertebrates within the Late Cretaceous of India.”

An incomplete chevron of caudal vertebrae and likewise cervical vertebra have additionally been reconstructed from a couple of recovered bone specimens.

The opposite fragmentary specimens although partially preserved would possibly in all probability be components of limb bones of a sauropod dinosaur.

Titanosaurian sauropod dinosaurs have been probably the most various and considerable large-bodied terrestrial herbivores within the Southern Hemisphere landmasses throughout the Cretaceous Interval however they weren’t endemic to the Gondwanan landmasses, the researchers mentioned.

Gondwana is the southern half of the Pangaean supercontinent that existed some 300 million years in the past and consists of the foremost continental blocks of South America, Africa, Arabia, Madagascar, Sri Lanka, India, Antarctica, and Australia.

In India, the Late Cretaceous sauropod dinosaur typically belong to the titanosaurian clade and has been reported from the Lameta Formation of Gujarat, Madhya Pradesh and Maharashtra and Kallamedu Formation of Tamil Nadu, the researchers mentioned.

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By Elias

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