Biostratigraphy of vertebrate footprints in the Late
Triassic section of the Newark basin, Pennsylvania: reassessmant of stratigraphic
Abstract--The discovery of the youngest Brachychirotherium,
the youngest Gwynneddichnium and two new ichnotaxa, as well as documentation
of other known ichnofauna from the youngest continuous stratigraphic section
in the Jacksonwald syncline necessitate redefinition of previous vertebrate
stratigraphic ranges and vertebrate diversity for the last seven million
years of the Late Triassic (including the Rhaetian of some workers). This
period has thus far been poorly prospected worldwide (Olsen and Sues, 1986).
These new ichnological finds help reconstruct faunal diversity and turnover
near the Triassic-Jurasic boundary.