干旱区生态环境知识资源中心(Arid): Jurassic Palynology from The Dinosaur Coast of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights

Arid

DOI	10.3390/biology11121695
	Jurassic Palynology from The Dinosaur Coast of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights
	Santos, Artai A.; Pinuela, Laura; Rodriguez-Barreiro, Ivan; Carlos Garcia-Ramos, Jose; Diez, Jose B.
通讯作者	Santos, AA
来源期刊	BIOLOGY-BASEL
EISSN	2079-7737
出版年	2022
卷号	11 期号:12
英文摘要	The Upper Jurassic deposits of the Lastres Formation crop out on the Asturian coast (northwest of the Iberian Peninsula), in the so-called The Dinosaur Coast. This formation presents a high abundance of dinosaur remains and other vertebrates. Despite the deep knowledge about its fauna and environment, practically nothing is known about the plant communities that formed the landscape of the region at the end of the Jurassic. We present here the first palynological data of the Lastres Fm., identifying a rich and abundant palynological assemblage formed by more than 60 different taxa. The presence of some taxa with biostratigraphic value suggests a Kimmeridgian-Tithonian age for this formation. On the other hand, the botanical affinities of the taxa found indicate that the vegetation of the The Dinosaur Coast of Asturias would not be homogeneous, but would be formed by a mosaic of different plant communities that would adapt to the variety of environments present in the region. The presence of forest areas probably represented a protected environment as well as a food source for herbivorous dinosaurs. Analysis of charcoalified wood remains suggests that palaeofires were relatively recurrent in the study area. Abundant fossils of vertebrates (mainly footprints and bones of dinosaurs) and numerous invertebrates occur in the Upper Jurassic deposits of the Lastres Formation in the Asturias region, North of Spain. However, no palynological study has been published from this geological formation; therefore, much palaeoenvironmental and palaeoecological information is still unknown. In this study, a total of 62 morphospecies, belonging to 49 different morphogenera were identified, including pollen, spores, algae remains, fungi spores, dinoflagellates, foraminifera, and scolecodonts from four different locations on the Asturian coast. Spores are the dominant group of palynomorphs, both in diversity and abundance, contrasting with the minor diversity of pollen grains. The age of some key taxa indicates that the palynological assemblage cannot be older than the Kimmeridgian, suggesting a Kimmeridgian-Tithonian age. The botanical and environmental affinities of the pollen and spores indicate the presence of different plant assemblages, including plant communities from humid areas such as the margin of rivers and small freshwater ponds that were dominated by bryophytes and ferns, and a coastal plant community that would inhabit arid areas and would be dominated by gymnosperms and some pteridophytes. The SEM analyses of wood remains show the abundance of charcoalified remains suggesting that wildfires were usual in The Dinosaur Coast of Asturias during the Kimmeridgian.
英文关键词	palynology plant communities wildfires Late Jurassic The Dinosaur Coast North Spain
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000902282900001
WOS关键词	WESTERN PORTUGAL ; LUSITANIAN BASIN ; IN-SITU ; EUROPE ; BIOGEOGRAPHY ; TERRESTRIAL ; SUCCESSION ; PATAGONIA ; TOARCIAN ; WEALDEN
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391987
推荐引用方式 GB/T 7714	Santos, Artai A.,Pinuela, Laura,Rodriguez-Barreiro, Ivan,et al. Jurassic Palynology from The Dinosaur Coast of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights[J],2022,11(12).
APA	Santos, Artai A.,Pinuela, Laura,Rodriguez-Barreiro, Ivan,Carlos Garcia-Ramos, Jose,&Diez, Jose B..(2022).Jurassic Palynology from The Dinosaur Coast of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights.BIOLOGY-BASEL,11(12).
MLA	Santos, Artai A.,et al."Jurassic Palynology from The Dinosaur Coast of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights".BIOLOGY-BASEL 11.12(2022).