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 Summary
We are broadly interested in how global events, environmental change and ecological interactions affect long-term evolution (macroevolution) in early vertebrates (half of vertebrate history) and ray-finned fishes (half of vertebrate diversity).

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

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

April 22, 2015: Incoming undergraduate (Penn '19) Jack Stack has received the Rodney M. Feldman Award, a Paleontological Society Student Research Grant! This will fund his fieldwork on Paleozoic fish faunas in Michigan this summer. Congratulations, Jack!

April 3, 2015: PhD student Kara Ludwig has been awarded a GSA Graduate Student Research Grant to study oxygen isotopes in conodonts over the end-Ordovician extinction! Congratulations, Kara!

March 30, 2015:  MS Student Bryan Juarez has been awarded an NSF Graduate Research Fellowship! Congratulations, Bryan!

Upcoming Talks
May 12-13, 2015: Lauren has been invited to speak at the Swedish Royal Academy of Sciences 275th Anniversary Symposium, "Palaeontological and Molecular Approaches to Early Vertebrate Evolution," in Uppsala, Sweden.

August 3-7: Lauren and Kara will be presenting at the 13th International Symposium on Early and Lower Vertebrates in Melbourne, Australia.

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)