Basturs Poble bonebed

[1] Over ten years, from 2001 through 2011, field work was done at this site, and a massive bonebed - consisting of some one thousand skeletal elements - was discovered.

[2][4] In addition to the large numbers of fossils of the animals themselves, the BP locality is one of many sites from the Tremp Syncline where hadrosaurs tracks have been found.

[3] In 2015, a study by Alejandro Blanco and colleagues performed multiple types of morphometric analysis to investigate hadrosaur diversity in from the Pyrenees using dentaries.

The number of alveolar positions in the dentary was the primary metric for distinctiveness, as more basal taxa possess less, though it was noted this can also increase with age as an individual grows.

[4] In 2018, a more extensive study of the material was conducted by Víctor Fondevilla and colleagues, and the question of how many taxa were present of the sample was investigated using specimens from multiple parts of the body, as opposed to just the dentaries.

Growth trajectory was found to be consistent between the tibiae, supporting the idea that the site represents a large variety of age stages of a single species.

[1] A poster presentation and abstract at a conference suggested the specimens may have belonged to Koutalisaurus kohlerorum, but they cautioned an adult dentary from the bonebed would need to be discovered to test the hypothesis.

[7] Fondevilla et al. (2018) compared to the material from Basturs Poble to recognized species of lambeosaurine from geographically and temporally similar locations in the Pyrenees.

As such, it was considered most likely the Basturs Poble hadrosaurs are members of the species P. isonensis, but the poor state of preservation of the only comparable material in the bonebed prevented a secure referral.

They compared the material of their species to that of the bonebed, and though similarities were found, their tooth crowns and ilia had different shapes, and the scapulae from the site lacked the distinct shallow nature that characterizes A. arcanus.

Additionally, they commented on the lack of tsintaosaurin synapomorphies in the bonebed material and so kept a referral as indeterminate lambeosaurines rather than considering it to represent Pararhabdodon.