@article {https://doi.org/10.1111/let.12449,
	title = {A new vertebrate fossil-bearing layer in the Rh{\ae}telv Formation (Kap Stewart Group) of central East Greenland: evidence of a Hettangian marine incursion into the continental Jameson Land Basin},
	journal = {Lethaia},
	volume = {n/a},
	number = {n/a},
	year = {2021},
	note = {<p>n/a</p>
},
	abstract = {<p>The Kap Stewart Group (Rhaetian-Sinemurian, Triassic{\textendash}Early Jurassic) of the Jameson Land Basin in central East Greenland has traditionally been regarded as a strictly continental unit with delta and perennial lake sediments. New finds of plesiosaur bone remain in a thin storm deposited sandstone bed in the middle part of the Rh{\ae}telv Formation of the Kap Stewart Group, however, indicates a likely period of marine influence. At the study area at the eastern margin of the basin, the Rh{\ae}telv Formation is 300-m thick and overlies unconformably the Norian Fleming Fjord Group. The bone-bearing sandstone occurs 190~m above the base of the group and is closely associated with black laminated mudstones; palynological investigation of three samples from these mudstones indicates that they are of a younger Hettangian age. The Hettangian was a relatively short stage (201.3{\textendash}199.5~Ma) and elsewhere characterized by two episodes of sea-level highstands. Assuming that the marine incursion in the Jameson land Basin evidenced by the plesiosaur fossil remains took place during the youngest of these sea-level highstands, the bone-bearing bed of the Rh{\ae}telv Formation can be dated to 200~Ma and thereby gives the first numerical age constraint of this hitherto poorly dated succession.</p>
},
	keywords = {Hettangian, Jameson Land Basin, Kap Stewart Group, marine incursion, plesiosaur},
	doi = {https://doi.org/10.1111/let.12449},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/let.12449},
	attachments = {https://docentes.fct.unl.pt/sites/default/files/omateus/files/let.12449.pdf},
	author = {Clemmensen, Lars B. and Lindstr{\"o}m, Sofie and Mateus,Oct{\'a}vio and Mau, Malte and Mil{\`a}n, Jesper and Kent, Dennis V.}
}
