Researchers have discovered sauropod dinosaur fossil bone fragments from the area near the Sikasi hills of Meghalaya State, with a history dating back about 100 million years.
Researchers from the Geological Survey of Paleontology in Northeast India made unpublished findings during a recent field visit.
GSI researchers pointed out that this is the first record of a sauropod found in this area that may be the origin of Titanosaurus.
Sauropods have a very long neck, a long tail, a small head relative to the rest of the body, and four thick, columnar legs. They are known for the huge size of certain species, and this group includes the largest animals that have ever lived on land.
They say this discovery makes Meghalaya the fifth state in India after Gujarat, Madhya Pradesh, Maharashtra and Tamil Nadu, and is the only reported sauropod dinosaur skeleton in the Northeast. A state with affinity for the Titansola.
Titanosaurus is a different species of sauropod dinosaurs, including the genus of Africa, Asia, South America, North America, Europe, Australia and Antarctica.
Arindam Roy, senior geologist at the GSI Department of Paleontology, said: “The dinosaur bones in Meghalaya were reported by GSI in 2001, but they are too fragmented and poorly preserved to understand their taxonomic characteristics.”
Roy told PTI: “The bones currently found were during field work in 2019-2020 and 2020-21. The team’s last visit was in February 2021. The fossils were probably in the Cretaceous period about 100 million years ago. Late.”
He pointed out that the most well-preserved fossil is the limb bones, with increased types of curvature, and the development of the lateral and proximal edges of the partially preserved bone indicates that it is a humerus.
However, he pointed out that the conclusion is based on preliminary research and detailed work is underway.
The collected bone fragments were collected from poorly sorted purple to green, coarse ashlar sandstone interspersed with pebble beds.
The researchers said that more than 25 jointless, mostly fragmented bone specimens have been recovered. These specimens are of various sizes and appear as isolated specimens, but some of them are very close to each other.
They said that due to the poor preservation, incompleteness, and fragmented nature of the bones, it is difficult to classify and identify the genus, and most of the recovered bones have been partially petrified and partially replaced.
Therefore, only the three best preserved can be studied. The largest one is the preserved limb bones that are 55 centimeters (cm) long. It is comparable to the average humeral length of Tilong.
According to the researchers, the firmness of the bones, the difference in curvature of the outer edges and the relatively straightness of the proximal edges are some of the morphological characteristics that suggest the affinity of Titanosaurus.
They say that another incomplete limb bone about 45cm in length is also comparable to the limb bones of the titanic clade.
Roy said: “In the current work, a large number of bones have been recovered, especially the few limb bones and vertebrae with the taxonomic characteristics of the titanosaur clade.”
He pointed out: “The record of sauropod assemblages that may be related to Taino sauropods in Meghalaya expands the distribution and diversity of vertebrates in the late Cretaceous period in India.”
Incomplete chevrons of the tail and cervical vertebrae were also reconstructed from some recovered bone specimens.
The remaining fragment specimens may be part of the limbs of sauropods.
Researchers say that during the Cretaceous period, the titanosaur sauropod dinosaurs were the most abundant and numerous terrestrial herbivores in the southern hemisphere land mass, but they were not endemic to the Gondwanan land mass.
Gonwanaland is the southern half of the Pangaean supercontinent. It existed about 300 million years ago. It was composed of the major landmass of South America, Africa, Arabia, Madagascar, Sri Lanka, India, Antarctica and Australia.
Researchers say that in India, sauropod dinosaurs in the Late Cretaceous are usually clade of titanosaurs. According to reports, Gujarat, Madhya Pradesh’s Lameda group, Tamil Nadu’s Maharashtra and Kalami Du Zu has reported.