Abrosaurus

Name: Abrosaurus ‭(‬Delicate lizard‭)‬.
Phonetic: Ab-roe-sore-us.
Named By: Ouyang‭ ‬-‭ ‬1989.‭
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Sauropodomorpha,‭ ‬Sauropoda,‭ ‬Macronaria.
Species: A.‭ ‬dongpoi‭ (‬type‭)‬.
Diet: Herbivore.
Size: Estimated around‭ ‬9‭ ‬meters long.
Known locations: China‭ ‬-‭ ‬Sichuan Province‭ ‬-‭ ‬Dashanpu/Lower Shaximiao Formation.
Time period: Bathonian/Callovian of the Jurassic.
Fossil representation: Initially based upon a skull,‭ ‬further fossils included post cranial remains have been attributed to the genus.

       The lightly built skull of Abrosaurus‭ (‬which is the inspiration for the name‭ ‘‬delicate lizard‭’) ‬clearly indicates that it was a macronarian sauropod,‭ ‬similar to genera such as Brachiosaurus and Camarasaurus.‭ ‬Camarasaurus in‭ ‬particular has been considered to be a very close relative of Abrosaurus because they both seem to represent basal‭ (‬primitive‭) ‬genera that were on the way to becoming more advanced like the later macronarian sauropods.‭ ‬The idea is tentative however because most descriptions of Abrosaurus centre around the skull and not the additional post cranial skeletal fossils that were later attributed to it.‭ ‬While future study of these remains may well confirm the idea that Abrosaurus is closely related to Camarasaurus,‭ ‬they may also reveal something unexpected.
       Abrosaurus likely shared is habitat with other sauropods like Omeisaurus,‭ ‬Shunosaurus and Dashanpusaurus‭ (‬another possible relative of Camarasaurus‭)‬ as well as other types of herbivorous dinosaur such as Agilisaurus and Huayangosaurus,‭ ‬all dinosaurs known from the same fossil formation as Abrosaurus.‭ ‬Numerous predatory dinosaurs are also known from the Lower Shaximiao Formation,‭ ‬but one in particular is Yangchuanosaurus,‭ ‬a particularly large theropod dinosaur that may have been able to tackle an Abrosaurus.

Further reading
- [A new sauropod from Dashanpu, Zigong Co., Sichuan Province (Abrosaurus dongpoensis gen. et sp. nov.)]. - Zigong Dinosaur Museum Newsletter 2:10-14 - H. Ouyang - 1989.



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