Engel, Michael S., and David A Grimaldi. 2014. “Whipspiders (Arachnida: Amblypygi) in Amber from the Early Eocene and Mid-Cretaceous, Including Maternal Care”. Novitates Paleoentomologicae, no. 9 (August): 1-17. https://doi.org/10.17161/np.v0i9.4765.