DOI: 10.5061/dryad.gn960
title: Data from: New heterodontosaurid remains from the Cañadón Asfalto Formation: cursoriality and the functional importance of the pes in small heterodontosaurids

description: 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.
description: Supplemental_Data_1
 Table 1 measurements MPEF-PV 3826Table with measurements
 of the heterodontosaurid specimen MPEF-PV 3826Supplemental_Data_2 Fig
 1 isolated vertebrae copyIsolated vertebrae of
 specimen MPEF-PV 3826 that still in the rockSupplemental_Data_2 Fig
 1 captionCaption of figure
 1Supplamental_Data_2 Fig 1
 caption.docSupplemental_Data_3 Fig
 2 vertebrae in metatarsals copyvertebrae associated to
 the metatarsi of specimen MPEF-PV 3826Supplemental_Data_3 Fig
 2 captionCaption of figure
 2Supplamental_Data_3 Fig 2
 caption.docSupplemental_Data_4 Fig
 3 phalanges in metatarsals copyPhalanges asociated to
 the metatarsi of specimen MPEF-PV 3826Supplemental_Data_4 Fig
 3 captioncaption of figure
 3Supplamental_Data_4 Fig 3
 caption.docSupplemental_Data_5 Fig
 4 isolated phalanges copyPhalanges of specimen
 MPEF-PV 3826 isolated from the rock and the metatarsiSupplemental_Data_5 Fig
 4 captionCaption of figure
 4Supplamental_Data_5 Fig 4
 caption.docSupplemental_Data_6 Fig
 5 histologic section in color copyHistologic section of
 metatarsal IV in colorSupplemental_Data_6 Fig
 5 captionCaption of figure
 5Supplamental_Data_6 Fig 5
 caption.docSupplemental_Data_7
 Table 2 Cluster analysisData for the cluster
 analysisSupplemental_Data_8
 Table 3 distance matrixresulting distance
 matrix for the cluster analysisSupplemental_Data_9
 Table 4 ultrametric matrixobtained ultrametric
 matrix from the cluster analysisSupplemental_Data_10
 Character list and data matrixcharacter list and data
 matrix used for the parsimony based phylogenetic
 analysisSupplemental_Data_11 Fig
 6 phylogenetic resultsStrict concensus of the
 performed phylogenetic analysis showing the complete
 topologySupplamental_Data_11 Fig
 6 captionCaption of figure
 6Supplemental_Data_12
 Table 5 data ternaryData used to perform the
 ternary diagramSupplemental_Data_13
 Table 6 PCA resultsresults of the PCA
 analysisSupplemental_Data_14
 Table 7 data curvature ungualsdata used to perform the
 box plots and bivariate diagrams of claw curvatureSupplamental_Data_15
 References of Suppl Datareferences of cited
 bibliography in the tables and text of the supplemental
 data