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// Workers AI · dad joke modeWhat did the Allaru Formation say? "I'm a rock solid formation.

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
CountryAustralia
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

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

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.

Archosaurs

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Dinosaurs

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Dinosaurs of the Allaru Formation
Genus Species Location Stratigraphic position Material Notes Image
Austrosaurus[2][1][3] A. mckillopi Queensland, Australia Albian Dorsal vertebrae and possible incomplete limb remains from several individuals A somphospondylan sauropod
Kunbarrasaurus[1][4] K. ieversi Queensland, Australia Albian A parankylosaur
?Muttaburrasaurus[1] ?M. sp. Queensland, Australia Albian A large ornithopod

Reptiles

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Reptiles of the Allaru Formation
Genus Species Location Stratigraphic position Material Notes Image
Elasmosauridae indet.[5] Indeterminate Albian Specimen number QMF2100, an articulated torso. Stomach cavity contains crustacean and fish remains as well as ~135 gastroliths.
Notochelone[6] N. costata Albian
Platypterygius[6] P. australis (=longmani) Albian

Fish

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Fishes of the Allaru Formation
Genus Species Location Stratigraphic position Material Notes Image
Cooyoo[7] C. australis Queensland, Australia Albian
Flindersichthys[8] F. denmeadi Albian
Pachyrhizodus[9] P. marathonensis Albian Two species known from both this and the Toolebuc Formation
P. grawi
Richmondichthys[10] R. sweeti Albian An aspidorhynchid also found in the Toolebuc Formation

Invertebrates

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Invertebrates of the Allaru Formation
Genus Species Location Stratigraphic position Material Notes Image
Eromangateuthis[2] E. soniae Queensland, Australia Albian "Gladius"
Goodhallites[11] G. goodhalli Albian
Inoceramus[12] I. sutherlandi Queensland , Australia Albian
Mckenziephyllia[13] M. accordensis Albian
Torynommidae[14] Torynomma quadrata Ilfracombe, Queensland Australia Albian
Homolidae[15] Lignihomola etheridgei Ilfracombe, Queensland Australia Albian

See also

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References

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  1. 1 2 3 4 5 Weishampel et al., 2004, pp.573-574
  2. 1 2 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. hdl:1808/29619. ISSN 1946-0279. S2CID 204976334.
  3. Poropat, Stephen F.; Nair, Jay P.; Syme, Caitlin E.; Mannion, Philip D.; Upchurch, Paul; Hocknull, Scott A.; Cook, Alex G.; Tischler, Travis R.; Holland, Timothy (2017-10-02). "Reappraisal of Austrosaurus mckillopi Longman, 1933 from the Allaru Mudstone of Queensland, Australia's first named Cretaceous sauropod dinosaur". Alcheringa: An Australasian Journal of Palaeontology. 41 (4): 543–580. doi:10.1080/03115518.2017.1334826. ISSN 0311-5518.
  4. Leahey et al., 2015
  5. Colin R. McHenry; Alex G. Cook; Stephen Wroe (November 2005). "Bottom-Feeding Plesiosaurs". Science. 310 (5745): 75. doi:10.1126/science.1117241. PMID 16210529. S2CID 28832109 via ResearchGate.
  6. 1 2 Kear, Benjamin P. (June 2003). "Cretaceous marine reptiles of Australia: A review of taxonomy and distribution". Cretaceous Research. 24 (3): 277–303. Bibcode:2003CrRes..24..277K. doi:10.1016/S0195-6671(03)00046-6 via ResearchGate.
  7. 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. Bibcode:2014Alch...38..170W. doi:10.1080/03115518.2014.848692. S2CID 140194963 via ResearchGate.
  8. 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.
  9. 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.
  10. 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.
  11. 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. Bibcode:2002Alch...26..233H. doi:10.1080/03115510208619254. S2CID 130589426 via ResearchGate.
  12. 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.
  13. 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.
  14. Woods, J. T (1953). "Brachyura from the Cretaceous of Central Queensland". Memoirs of the Queensland Museum. 13: 50–57.
  15. Woods, J. T (1953). "Brachyura from the Cretaceous of Central Queensland". Memoirs of the Queensland Museum. 13: 50–57.

Bibliography

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