Allaru Formation
Stratigraphic range: Albian
~112–100 Ma
TypeGeological formation
Unit ofRolling Downs Group
UnderliesMackunda Formation
OverliesToolebuc Formation
ThicknessUp to 700 m (2,300 ft)
Lithology
PrimaryMudstone
OtherSiltstone, sandstone, limestone
Location
Coordinates24°52′02.17″S 146°14′19.85″E / 24.8672694°S 146.2388472°E / -24.8672694; 146.2388472
Approximate paleocoordinates51°00′S 133°06′E / 51.0°S 133.1°E / -51.0; 133.1
RegionQueensland
Country Australia
ExtentEromanga Basin
Allaru Formation is located in Australia
Allaru Formation
Allaru Formation (Australia)
Allaru Formation is located in Queensland
Allaru Formation
Allaru Formation (Queensland)

The Allaru Formation, also known as the Allaru Mudstone, is a geological formation in Queensland, Australia, whose strata date back to the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1]

Fossil content

Possible indeterminate ankylosaur remains are present in Queensland. Indeterminate ornithopod remains are present in Queensland.[1]

Reptiles
Genus Species Location Material Notes Images
Austrosaurus A. mckillopi Queensland "Doral vertebrae [and possible] incomplete limb remains from several individuals"[2] [1]
Elasmosauridae Indeterminate Specimen number QMF2100, an articulated torso. Stomach cavity contains crustacean and fish remains as well as ~135 gastroliths.[3] [3]
Kunbarrasaurus K. ieversi Queensland [1][4]
?Muttaburrasaurus ?M. sp. Queensland [1]
Notochelone N. costata [5]
Platypterygius P. australis (=longmani) [5]

Fish

Genus Species Location Material Notes Images
Cooyoo C. australis Queensland [6]
Flindersichthys F. denmeadi [7]
Pachyrhizodus P. marathonensis, P. grawi Two species known from both this and the Toolebuc Formation[8]
Richmondichthys R. sweeti An aspidorhynchid also found in the Toolebuc Formation[9]
Invertebrates
Genus Species Location Material Notes Images
Eromangateuthis E. soniae Queensland "Gladius" [2]
Goodhallites G. goodhalli [10]
Inoceramus I. sutherlandi Queensland [11]
Mckenziephyllia M. accordensis [12]

See also

References

  1. ^ a b c d e Weishampel et al., 2004, pp.573-574
  2. ^ a b Fuchs, Dirk (2019). "Eromangateuthis N. Gen., a New Genus for a Late Albian Gladius-Bearing Giant Octobrachian (Cephalopoda: Coleoidea)". Paleontological Contributions. 2019 (21): 1–3. doi:10.17161/1808.29619. ISSN 1946-0279. S2CID 204976334.
  3. ^ a b Colin R. McHenry; Alex G. Cook; Stephen Wroe (November 2005). "Bottom-Feeding Plesiosaurs". Science. 310 (5745): 75. doi:10.1126/science.1117241. S2CID 28832109 – via ResearchGate.
  4. ^ Leahey et al., 2015
  5. ^ a b Kear, Benjamin P. (June 2003). "Cretaceous marine reptiles of Australia: A review of taxonomy and distribution". Cretaceous Research. 24 (3): 277–303. doi:10.1016/S0195-6671(03)00046-6 – via ResearchGate.
  6. ^ Lovisa Wretman; Benjamin P. Kear (April 2014). "Bite marks on an ichthyodectiform fish from Australia: Possible evidence of trophic interaction in an Early Cretaceous marine ecosystem". Alcheringa. 38 (2): 170–176. doi:10.1080/03115518.2014.848692. S2CID 140194963 – via ResearchGate.
  7. ^ Bartholomai, A. (2010). "Revision of Flindersichthys denmeadi Longman 1932, a marine teleost from the Lower Cretaceous of the Great Artesian Basin, Queensland". Memoirs of the Queensland Museum. S2CID 189970876.
  8. ^ Bartholomai, A. (17 February 2012). "The pachyrhizodontid teleosts from the marine Lower Cretaceous (latest mid to late Albian) sediments of the Eromanga Basin, Queensland, Australia". Memoirs of the Queensland Museum – Nature. 56 (1): 119–148.
  9. ^ Bartholomai, A. (2004). "The large aspidorhynchid fish, Richmondichthys sweeti (Etheridge Jnr and Smith Woodward, 1891) from Albian Marine deposits of Queensland, Australia". Memoirs of the Queensland Museum. S2CID 195531265.
  10. ^ R.A. Henderson; W.J. Kennedy (2002). "Occurrence of the ammonite Goodhallites goodhalli (J. Sowerby) in the Eromanga Basin, Queensland: an index species for the late Albian (Cretaceous)". Alcheringa. 26 (2): 233–247. doi:10.1080/03115510208619254. S2CID 130589426 – via ResearchGate.
  11. ^ Patrick Mark Smith; Timothy Holland (July 2016). "Cretaceous time capsules: remarkable preservation of fish and crustaceans inside the bivalve Inoceramus sutherlandi McCoy, 1865 from the Allaru Mudstone (late Albian), Eromanga Basin, Queensland". ResearchGate. doi:10.13140/RG.2.1.2264.9842.
  12. ^ John S. Jell; Alex G. Cook; Peter A. Jell (2010). "Australian Cretaceous Cnidaria and Porifera". Alcheringa: An Australasian Journal of Palaeontology. 35 (2): 241–284. doi:10.1080/03115518.2011.532322. S2CID 129707733.

Bibliography

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