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Javkhlant Formation

Javkhlant Formation
Stratigraphic range: Santonian-Campanian
~85 Ma
↓
Khugenetjavkhlant locality
TypeGeological formation
OverliesBayan Shireh Formation
Thickness380 m (1,250 ft)
Lithology
PrimaryMudstone
OtherSandstone, conglomerate
Location
Coordinates44°24′N 109°24′E / 44.4°N 109.4°E / 44.4; 109.4
Approximate paleocoordinates44°36′N 98°48′E / 44.6°N 98.8°E / 44.6; 98.8
RegionDornogov
Country Mongolia
Type section
Named byKhand et al.
Year defined2000
Javkhlant Formation is located in Mongolia
Javkhlant Formation
Javkhlant Formation (Mongolia)

The Javkhlant Formation is a geological formation in Mongolia whose strata date back to the Late Cretaceous possibly Santonian to Campanian. Ceratopsian, ornithopod and theropod remains been found in the formation. A prominent fossilized therizinosauroid nesting site is also known from the formation.

Paleobiota of the Javkhlant Formation

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Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

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Genus Species Location Stratigraphic Position Material Notes Images
Albinykus A. baatar Khugenetjavkhlant "Partial hindlimbs and pelvic girdle."[1] An alvarezsaurid.
Dendroolithidae indet. Indeterminate Khugenetjavkhlant "Large nesting site composed by more than 10 egg clutches in several nests."[2][3] A nesting area laid by a colony of therizinosauroids.
Enantiornithes indet. Indeterminate Khugenetjavkhlant "Embryonic remains enclosed within an isolated egg."[4] Bird eggs. Previously misidentified as neoceratopsian eggs.[5]
Haya H. griva Khugenetjavkhlant, Zos Canyon "Skull with partial skeletons of multiple specimens."[6][7] A thescelosaurid.
Ornithomimidae indet. Indeterminate Khugenetjavkhlant Not specified.[8] An ornithomimid.
Yamaceratops Y. dorngobiensis Khugenetjavkhlant, Shine Us Khuduk Shine Us Khuduk red beds "Skull with partial skeletons, including juveniles."[9][10] A neoceratopsian.
Zaraasuchus Z. shepardi Zos Canyon "Skull and fragmentary skeleton."[11] A gobisuchid.
Zosuchus Z. davidsoni Zos Canyon "Skull."[12] A shartegosuchoid.

See also

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References

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  1. ^ Nesbitt, Sterling J.; Clarke, Julia A.; Turner, Alan H.; Norell, Mark A. (2011). "A small alvarezsaurid from the eastern Gobi Desert offers insight into evolutionary patterns in the Alvarezsauroidea". Journal of Vertebrate Paleontology. 31 (1): 144–153. Bibcode:2011JVPal..31..144N. doi:10.1080/02724634.2011.540053. S2CID 85283009.
  2. ^ Kobayashi, Y.; Lee, Y.; Barsbold, R.; Zelenitsky, D.; Tanaka, K. (2013). "First record of a dinosaur nesting colony from Mongolia reveals nesting behavior of therizinosauroids". In Maxwell, E.; Miller-Camp, J.; Anemone, R. (eds.). 73rd Annual Meeting of Society of Vertebrate Paleontology. Los Angeles. p. 155.{{cite book}}: CS1 maint: location missing publisher (link)
  3. ^ Tanaka, K.; Kobayashi, Y.; Zelenitsky, D. K.; Therrien, F.; Lee, Y.-N.; Barsbold, R.; Kubota, K.; Lee, H.-J.; Tsogtbaatar, C.; Idersaikhan, D. (2019). "Exceptional preservation of a Late Cretaceous dinosaur nesting site from Mongolia reveals colonial nesting behavior in a non-avian theropod". Geology. 47 (9): 843−847. Bibcode:2019Geo....47..843T. doi:10.1130/G46328.1. S2CID 198412503.
  4. ^ Varricchio D.J., Balanoff A.M., Norell M.A., 2015, "Reidentification of Avian Embryonic Remains from the Cretaceous of Mongolia", PLoS ONE 10(6): e0128458
  5. ^ Balanoff, A. M.; Norell, M. A.; Grellet-Tinner, G.; Lewin, M. R. (2008). "Digital preparation of a probable neoceratopsian preserved within an egg, with comments on microstructural anatomy of ornithischian eggshells" (PDF). Naturwissenschaften. 95 (6): 493−500. Bibcode:2008NW.....95..493B. doi:10.1007/s00114-008-0347-2. PMID 18347769. S2CID 6421080.
  6. ^ Makovicky, Peter J.; Brandon M. Kilbourne; Rudyard W. Sadleir; Mark A. Norell (2011). "A new basal ornithopod (Dinosauria, Ornithischia) from the Late Cretaceous of Mongolia". Journal of Vertebrate Paleontology. 31 (3): 626–640. Bibcode:2011JVPal..31..626M. doi:10.1080/02724634.2011.557114. S2CID 86257644.
  7. ^ Barta, Daniel E.; Norell, Mark A. (2021). "The Osteology of Haya griva (Dinosauria: Ornithischia) from the Late Cretaceous of Mongolia". Bulletin of the American Museum of Natural History. 445 (1): 1–112. doi:10.1206/0003-0090.445.1.1. ISSN 0003-0090. S2CID 232059318.
  8. ^ Khand, Y.; Bagamgarav, D.; Barsbold, R. (2000). "Cretaceous system in Mongolia and its depositional environments". Developments in Palaeontology and Stratigraphy. 17: 49−79. doi:10.1016/S0920-5446(00)80024-2. ISBN 9780444502766.
  9. ^ Eberth, D.A.; Kobayashi, Y.; Lee, Y.N.; Mateus, O.; Therrien, F.; Zelenitsky, D.K.; Norrell, M.A. (2009). "Assignment of Yamaceratops dorngobiensis and associated redbeds at Shine Us Khudag (eastern Gobi, Dorngobi Province, Mongolia) to the redescribed Javkhlant Formation (Upper Cretaceous)". Journal of Vertebrate Paleontology. 29 (1): 295–302. Bibcode:2009JVPal..29..295E. doi:10.1080/02724634.2009.10010384.
  10. ^ Son, M.; Lee, Y.-M.; Zorigt, B.; Kobayashi, Y.; Park, J.-Y.; Lee, S.; Kim, S.-H.; Lee, K. Y. (2022). "A new juvenile Yamaceratops (Dinosauria, Ceratopsia) from the Javkhlant Formation (Upper Cretaceous) of Mongolia". PeerJ. 10: e13176. doi:10.7717/peerj.13176. PMC 8992648. PMID 35402094.
  11. ^ Pol, D.; Norell, M. A. (2004). "A New Gobiosuchid Crocodyliform Taxon from the Cretaceous of Mongolia" (PDF). American Museum Novitates (3458): 1−31. hdl:2246/2768.
  12. ^ Pol, D.; Norell, M. A. (2004). "A New Crocodyliform from Zos Canyon, Mongolia" (PDF). American Museum Novitates (3445): 1−36. hdl:2246/2810.