Named By: Ouyang - 1989.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Macronaria.
Species: A. dongpoi (type).
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.
lightly built skull of Abrosaurus (which is the
inspiration for the
name ‘delicate lizard’) clearly indicates that it was a macronarian
similar to genera such as Brachiosaurus
Camarasaurus in particular has been considered to
be a very close
relative of Abrosaurus because they both seem to
(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.
- [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.