Supplementary photographs from: The Canadian fossil record supports anagenesis in Triceratops (Ornithischia, Ceratopsia)

Evolution of the ceratopsid dinosaur Triceratops has been hypothesized to have proceeded anagenetically, with the geologically older Triceratops horridus having directly given rise to the younger Triceratops prorsus. This evolutionary scenario is based primarily on the upper Maastricthian fossil record of the Hell Creek Formation in Montana. The Canadian fossil record affords an opportunity to test this hypothesis beyond the geographic bounds where it was originally developed. The Canadian strata (lower Scollard Formation of Alberta and Frenchman Formation of Saskatchewan) are roughly contemporaneous with the upper third of the Hell Creek Formation where T. prorsus is found. On the anagenesis hypothesis, the Canadian strata should, therefore, uniquely contain that species. Our exhaustive survey of the Canadian Triceratops material, supported by cladistic and ordination analyses, confirms the presence of a single species, T. prorsus, in Canada, yielding robust support for the anagenesis ..., , , # Supplementary photographs from: The Canadian fossil record supports anagenesis in Triceratops (Ornithischia, Ceratopsia)

[https://doi.org/10.5061/dryad.p2ngf1w2d](https://doi.org/10.5061/dryad.p2ngf1w2d)

## Description of the data and file structure

This file contains photos of Canadian Triceratops skulls, representing different anatomical views, to supplement the article \"The Canadian fossil record supports anagenesis in *Triceratops* (Ornithischia, Ceratopsia)\" by Mallon et al., published in the Canadian Journal of Earth Sciences.

### Files and variables

File contains .jpg images of the following Triceratops specimens:

CMNFV 8662

CMNFV 8741

CMNFV 34824

CMNFV 56508

EM P15.1

RSKM 2525.1

RSKM P1163.4

RSKM P2982.1,