Citation
Becerra, Marcos Gabriel; Pol, Diego; Rauhut, Oliver Walter Mischa; Cerda, Ignacio Alejandro (2016), Data from: New heterodontosaurid remains from the Cañadón Asfalto Formation: cursoriality and the functional importance of the pes in small heterodontosaurids, Dryad, Dataset, https://doi.org/10.5061/dryad.gn960
New ornithischian remains reported here (MPEF-PV 3826) include two complete metatarsi with associated phalanges and caudal vertebrae, from the late Toarcian levels of the Cañadón Asfalto Formation. We conclude that these fossil remains represent a bipedal heterodontosaurid but lack diagnostic characters to identify them at the species level, although they probably represent remains of Manidens condorensis, known from the same locality. Histological features suggest a subadult ontogenetic stage for the individual. A cluster analysis based on pedal measurements identifies similarities of this specimen with heterodontosaurid taxa and the inclusion of the new material in a phylogenetic analysis with expanded character sampling on pedal remains confirms the described specimen as a heterodontosaurid. Finally, uncommon features of the digits (length proportions among nonungual phalanges of digit III, and claw features) are also quantitatively compared to several ornithischians, theropods, and birds, suggesting that this may represent a bipedal cursorial heterodontosaurid with gracile and grasping feet and long digits. In particular, the elongated non-terminal pedal phalanges and morphology of digit III resemble features present in arboreal birds, a unique condition found so far among ornithischians.
Supplemental_Data_1 Table 1 measurements MPEF-PV 3826
Table with measurements of the heterodontosaurid specimen MPEF-PV 3826
Supplemental_Data_2 Fig 1 isolated vertebrae copy
Isolated vertebrae of specimen MPEF-PV 3826 that still in the rock
Supplemental_Data_2 Fig 1 caption
Caption of figure 1
Supplamental_Data_2 Fig 1 caption.doc
Supplemental_Data_3 Fig 2 vertebrae in metatarsals copy
vertebrae associated to the metatarsi of specimen MPEF-PV 3826
Supplemental_Data_3 Fig 2 caption
Caption of figure 2
Supplamental_Data_3 Fig 2 caption.doc
Supplemental_Data_4 Fig 3 phalanges in metatarsals copy
Phalanges asociated to the metatarsi of specimen MPEF-PV 3826
Supplemental_Data_4 Fig 3 caption
caption of figure 3
Supplamental_Data_4 Fig 3 caption.doc
Supplemental_Data_5 Fig 4 isolated phalanges copy
Phalanges of specimen MPEF-PV 3826 isolated from the rock and the metatarsi
Supplemental_Data_5 Fig 4 caption
Caption of figure 4
Supplamental_Data_5 Fig 4 caption.doc
Supplemental_Data_6 Fig 5 histologic section in color copy
Histologic section of metatarsal IV in color
Supplemental_Data_6 Fig 5 caption
Caption of figure 5
Supplamental_Data_6 Fig 5 caption.doc
Supplemental_Data_7 Table 2 Cluster analysis
Data for the cluster analysis
Supplemental_Data_8 Table 3 distance matrix
resulting distance matrix for the cluster analysis
Supplemental_Data_9 Table 4 ultrametric matrix
obtained ultrametric matrix from the cluster analysis
Supplemental_Data_10 Character list and data matrix
character list and data matrix used for the parsimony based phylogenetic analysis
Supplemental_Data_11 Fig 6 phylogenetic results
Strict concensus of the performed phylogenetic analysis showing the complete topology
Supplamental_Data_11 Fig 6 caption
Caption of figure 6
Supplemental_Data_12 Table 5 data ternary
Data used to perform the ternary diagram
Supplemental_Data_13 Table 6 PCA results
results of the PCA analysis
Supplemental_Data_14 Table 7 data curvature unguals
data used to perform the box plots and bivariate diagrams of claw curvature
Supplamental_Data_15 References of Suppl Data
references of cited bibliography in the tables and text of the supplemental data