Peter J. Wagner

Contrasting Species-Level and Genus Level Disparity Patterns within the ammonoid family Acanthoceratidae

This study compares genus-level and species-level disparity patterns in acanthoceratid ammonoids to assess if genus-level data accurately reflect species-level evolutionary dynamics during a major ecological event.

Incorporating continuous characters in joint estimation of dicynodont phylogeny

This study estimates dicynodont phylogeny using continuous traits under Brownian motion models and finds they contribute different signal compared to discrete traits, leading to different tree topologies.

Quantitative Models for Distinguishing Punctuated and Continuous-Time Models of Character Evolution and Their Implications for Macroevolutionary Theory

This paper develops a model to distinguish between punctuated and continuous-time character evolution models using Bayesian analyses of strophomenoid brachiopods, finding support for punctuated models over continuous-time models.