The Tamayama Formation is a
Coniacian-
Santonian geologic
formation in
Japan.
Dinosaur remains not referrable to the
genus level are among the fossils that have been recovered from the formation.[1] The lower and middle part of the formation consists of braided river sandstone, while the upper portion consists of upper shoreface to inner shelf sandstone.[2] Vertebrate taxa from the formation include Futabasaurus and Cretalamna, along with
titanosauriform teeth and
neosuchian remains. Seeds of the
nymphaeales plant Symphaenale futabensis are also known from this formation.
^
abcSaegusa, H.; Tomida, Y. (2011). "Titanosauriform teeth from the Cretaceous of Japan". Anais da Academia Brasileira de Ciências. 83 (1): 247–265.
doi:
10.1590/S0001-37652011000100014.
^Aiba, H.; Inose, H. (2024). "A New False Fairy Wasp (Hymenoptera: Mymarommatoidea: Mymarommatidae) in Late Cretaceous Iwaki Amber from Futaba Group of Iwaki City, Fukushima Prefecture, Japan". Paleontological Research. 28 (3): 1–8.
doi:
10.2517/PR230020.
^Takahashi, M.; Crane, P.R.; Manchester, S.R. (2002). "Hironoia fusiformis gen. et sp. nov.; a cornalean fruit from the Kamikitaba locality (Upper Cretaceous, Lower Coniacian) in northeastern Japan". Journal of Plant Research. 115 (6): 463–473.
doi:
10.1007/s10265-002-0062-6.
References
Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.
ISBN0-520-24209-2.