A 350-million-year-old marine 
ecosystem in Scotland 
(Painting by Robert Nicholls)

Oxypteriscus, an extinct ray-finned fish

The earliest shell-crushing ray-fin, Fouldenia, 348 million years ago 
(Painting by John Megahan)


Lauren Cole Sallan, PhD
Assistant Professor
Earth and Environmental Science

& Evolution Cluster
University of Pennsylvania
CV  Google Citations Impact Story

Now recruiting PhD students for 2015

Research Interests
Macroevolution, Macroecology,
Early Vertebrates, Ichthyology 
Mass Extinction, Phylogenetics
Biomechanics, Evo-Devo

Research Summary
We are broadly interested in how global events, environmental change and ecological interactions affect long-term evolution (macroevolution).

Listen to a Palaeocast interview about our research on early vertebrate macroevolution and paleobiology


Oct. 15, 2014: New paper in Biological Reviews on the origins of ray-finned fish biodiversity.

October 2014 (GSA): Lauren Sallan, Bryan Juarez, Kara Ludwig and Brian Swartz will be attending GSA in Vancouver. Bryan is speaking on ecomorphological trends in lobe-finned fishes at 4:00pm on Oct. 19 (West 220). Lauren is speaking on Ordovician-Silurian vertebrate diversification at 3:30pm on Oct. 20 (West 114). Brian is speaking on habitat shifts in early tetrapods at 1:15pm on Oct. 21 (West 219).

November 2014 (SVP): Lauren Sallan and Brian Swartz will be attending SVP in Berlin. Lauren is speaking on vertebrate body size trends through extinction and radiation on Nov. 7 (Paris).

A 310-million-year-old freshwater ecosystem in Illinois
(Painting by John Megahan)

A phylogeny of living ray-finned fishes

A later shell-crushing ray-fin, 
Styracopterus, 340 million years ago
(Painting by John Megahan)