@misc{indiciae9d681bea7faf, title = {Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus}, author = {Jean Self-Trail and Ellen Seefelt and Claire L. Shepherd and Victoria A. Martin}, year = {2017}, url = {https://pubs.usgs.gov/publication/70191914}, note = {Source identifier: 70191914} }