Kaganaias

Kaganaias
Temporal range: Cretaceous Barremian[1]
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Kaganaias hakusanensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Family: †Dolichosauridae
Genus: †Kaganaias
Evans, et al. 2006
Species:
†K. hakusanensis
Binomial name
†Kaganaias hakusanensis
Evans, et al. 2006

Kaganaias (meaning 'Kaga water nymph') is an extinct genus of basal and oldest dolichosaur[2][3][4][5] that lived in what is now Japan during the Early Cretaceous. Kaganaias was semi-aquatic and is the only known aquatic squamate known from before the Cenomanian stage of the Cretaceous. It is also the first to be found in an inland area, instead of on the coast where aquatic squamates are commonly found.[6] Its generic name is derived from Kaga Province, the old name for the Ishikawa Prefecture where the specimens were found, while the species name hakusanensis comes from the mountain that gives its name to Hakusan the city near its find site. The geological formation in which the specimens were found, the Kuwajima Formation, stands alongside the Tetori River and has been the site of numerous other finds including molluscs, dinosaurs, fish, and pterosaurs.

  1. ^ Amiot, Romain; Kusuhashi, Nao; Saegusa, Haruo; Shibata, Masateru; Ikegami, Naoki; Shimojima, Shizuo; Sonoda, Teppei; Fourel, François; Ikeda, Tadahiro; Lécuyer, Christophe; Philippe, Marc (2021-01-01). "Paleoclimate and ecology of Cretaceous continental ecosystems of Japan inferred from the stable oxygen and carbon isotope compositions of vertebrate bioapatite" (PDF). Journal of Asian Earth Sciences. 205: 104602. doi:10.1016/j.jseaes.2020.104602. ISSN 1367-9120. S2CID 228820808.
  2. ^ Caldwell, Michael W.; Simões, Tiago R.; Palci, Alessandro; Garberoglio, Fernando F.; Reisz, Robert R.; Lee, Michael S. Y.; Nydam, Randall L. (2021-07-03). "Tetrapodophis amplectus is not a snake: re-assessment of the osteology, phylogeny and functional morphology of an Early Cretaceous dolichosaurid lizard". Journal of Systematic Palaeontology. 19 (13): 893–952. doi:10.1080/14772019.2021.1983044. ISSN 1477-2019. S2CID 244414151.
  3. ^ Paparella, Ilaria; Palci, Alessandro; Nicosia, Umberto; Caldwell, Michael W. (2018-06-20). "A new fossil marine lizard with soft tissues from the Late Cretaceous of southern Italy". Royal Society Open Science. 5 (6): 172411. Bibcode:2018RSOS....572411P. doi:10.1098/rsos.172411. ISSN 2054-5703. PMC 6030324. PMID 30110414.
  4. ^ "白山市 化石壁産出新種化石について_01". www.city.hakusan.lg.jp. Retrieved 2022-03-21.
  5. ^ Campbell Mekarski, Michelle; Pierce, Stephanie E.; Caldwell, Michael W. (2019). "Spatiotemporal Distributions of Non-ophidian Ophidiomorphs, With Implications for Their Origin, Radiation, and Extinction". Frontiers in Earth Science. 7. doi:10.3389/feart.2019.00245. ISSN 2296-6463.
  6. ^ Evans, S.E., Manabe, M., Noro, M., Isaji, S. & Yamaguchi, M. (2006). "A Long-Bodied Lizard From The Lower Cretaceous Of Japan." Palaeontology, 49.6, 2006, pp. 1143–1165.