This was the vegetal landscape in which the Mesozoic dinosaurs from Burgos lived
This was the vegetal landscape in which the Mesozoic dinosaurs from Burgos lived
This was the vegetal landscape in which the Mesozoic dinosaurs from Burgos lived
A research team composed of members of the Archaeological and Paleontological Collective of Salas de los Infantes (CAS), in the province of Burgos, the universities of Vigo, Complutense of Madrid (Spain), Autonomous University of Mexico and Chuo University (Tokyo, Japan) has obtained new information about the vegetal landscape in which the Mesozoic dinosaurs of Burgos lived.
Last summer, the group presented two papers at international scientific congresses, in which the latest results of their study were presented.
On the one hand, at the 5th International Paleontological Congress, held in Paris (France), from 9 to 13 July, up to four different types of trunks of benetital plants from different places in the mountain region were presented. The benetitales formed a group, already extinct, of plants with the appearance of dwarf palm trees and related to the conifers.
Burgalese fossils stand out for the magnificent conservation of anatomical features such as reproductive structures, sap vessels or seeds. One of the most interesting conclusions made by the researchers is the similarity of these trunks with others found in Europe as well as Northwestern North America.
On the other hand, at the 10th European Conference on Paleobotany and Palynology, held in Dublin (Ireland) from 12 to 17 August, fossil remains of plants from a site near the Terrazas neighborhood were disseminated for the first time in a scientific forum. in which impressions of stems and leaves, amber, pollen grains and spores have been recovered.
Fossil pollen grains. (Photo: CAS)
The study focused on pollens and spores, among which the figure of 21 genera has been discovered, proof of a high ecological diversity. The study has allowed dating the site in the transition from the Jurassic to the Cretaceous, around 145 million years ago, "which gives special importance to being one of the few points of the Iberian Peninsula that has a set of fossils of this guy, "they explain.
Another conclusion points to the existence of a warm and humid environment without marine influence, fully continental. With this information, knowledge about the mountain ecosystems of 145 million years ago is widening, including the ancient lakes where the dinosaurs that left the traces of the Lara area were moved.
For several years CAS has been promoting the study of the wide collection of fossil plants that the Dinosaurs Museum of Salas de los Infantes has preserved. The CAS is developing a project that began in 2008 and funded by the Junta de Castilla y León during two campaigns.
The project addresses several objectives, among which is to draw a landscape to the dinosaurs found in the Sierra de la Demanda, around Salas de los Infantes. In more detail, the aim is to identify and reconstruct the plant communities present in the ecosystems occupied by Serran dinosaurs, from the Upper Jurassic to the Late Cretaceous (145 to 65 million years ago).
In addition to the fossils of the Dinosaurs Museum of Salas de los Infantes, environmental sites containing fossil trunks, remains of stems, leaves and reproductive structures, cuticles (tissues of the "skin" of plants), pollen grains are studied. Spores The data obtained so far show the great diversity of vegetation existing at that time, which is helping to know the environments (fluvial, lagoons, wooded, etc.) in which the dinosaurs lived. In this sense, one of the ultimate goals of the project is to establish the possible food relations between the dinosaurs and these plants.
With these last studies, the balance of the project on fossil plants promoted by the CAS in these years is very positive. We have managed to work in several sites in the district of Salas de los Infantes that are providing unique fossils, with very diverse groups and species and, in several cases, that have a magnificent conservation. "The obtaining of data on the climate and characteristics of the ecosystems, is united to the information on the dating or age of those deposits, this last one a problem until now not completely solved", they explain from the collective salense.
The study on the great richness and diversity of paleobotany of the Sierra de la Demanda also allows us to disseminate and explain to the public how complex ecosystems in its flora were able to maintain a fauna of large consumers of plant matter, such as dinosaurs. (Source: CAS / CGP / DICYT)
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