values indicate that prior to the mass extinction, marine reptiles at the top of food webs were feeding on only one source of calcium, suggesting their populations exhibited heightened vulnerability to extinctions at the terminus of the Cretaceous. [99] Giant non-archosaurian aquatic reptiles such as mosasaurs and plesiosaurs, which were the top marine predators of their time, became extinct by the end of the Cretaceous. [100] [101] [102] The ichthyosaurs had disappeared from fossil records before the mass extinction occurred. [103] Archosaurs [ edit ] Kauffman, E. (2004). "Mosasaur predation on upper Cretaceous nautiloids and ammonites from the United States Pacific Coast" (PDF). PALAIOS. 19 (1): 96–100. Bibcode: 2004Palai..19...96K. doi: 10.1669/0883-1351(2004)019<0096:MPOUCN>2.0.CO;2. S2CID 130690035.

Sleep, Norman H.; Lowe, Donald R. (9 April 2014). "Scientists reconstruct ancient impact that dwarfs dinosaur-extinction blast". American Geophysical Union. Archived from the original on 1 January 2017 . Retrieved 30 December 2016. But Paul explains, 'The dating of those layers of clay around the world is very accurate - it's estimated to within a couple of thousands of years.

What survived the asteroid impact?

Books: The Art of The Little Mermaid • Disney Princess Enchanted Stables: The Little Mermaid: Ariel's Baby Beau • Poor Unfortunate Soul: A Tale of the Sea Witch • Official Comic Adaptation • Disney Comics • The Little Mermaid's Treasure Chest • Disney Princess Beginnings • Marvel Comics • The Little Mermaid: The Full Film Script • Prince of Song & Sea • The Little Mermaid: Against the Tide Among decapods, extinction patterns were highly heterogeneous and cannot be neatly attributed to any particular factor. Decapods that inhabited the Western Interior Seaway were especially hard-hit, while other regions of the world's oceans were refugia that increased chances of survival into the Palaeocene. [55]

a b Ferreira da Silva, Luiza Carine; Santos, Alessandra; Fauth, Gerson; Manríquez, Leslie Marcela Elizabeth; Kochhann, Karlos Guilherme Diemer; Do Monte Guerra, Rodrigo; Horodyski, Rodrigo Scalise; Villegas-Martín, Jorge; Ribeiro da Silva, Rafael (April 2023). "High-latitude Cretaceous–Paleogene transition: New paleoenvironmental and paleoclimatic insights from Seymour Island, Antarctica". Marine Micropaleontology. 180: 102214. Bibcode: 2023MarMP.180j2214F. doi: 10.1016/j.marmicro.2023.102214. S2CID 256834649 . Retrieved 23 March 2023. a b Hull, Pincelli M.; Bornemann, André; Penman, Donald E. (17 January 2020). "On impact and volcanism across the Cretaceous-Paleogene boundary". Science. 367 (6475): 266–272. Bibcode: 2020Sci...367..266H. doi: 10.1126/science.aay5055. hdl: 20.500.11820/483a2e77-318f-476a-8fec-33a45fbdc90b. PMID 31949074. S2CID 210698721 . Retrieved 17 January 2020. She was also seen fiercely protecting her precious plaything from her mum, Dourga, who was warned off with a few playful pats to the face. Alvarez, Luis (10 March 1981). "The Asteroid and the Dinosaur (Nova S08E08, 1981)". IMDB. PBS-WGBH/Nova . Retrieved 12 June 2020.It is probable that they were either carnivores or omnivores, but they definitely were not herbivores,' says Paul. 'They were relatively uncommon, as even when you get the first definitive dinosaurs around 230 million years ago they are still rare members of the fauna.' Paul says, 'For two million years there was a huge amount of volcanic activity going on, spewing gases into the atmosphere and having a major impact on global climate.