Early Silurian crinoid diversification on Baltica : Euspirocrinus varbolaensis sp. novAusich, William I.; Wilson, Mark A.; Toom, UrsulaEstonian journal of earth sciences2024 / p. 37-44 : ill https://doi.org/10.3176/earth.2024.05 New crinoids from the Baltic region (Estonia): fossil tip-dating phylogenetics constrains the origin and Ordovician–Silurian diversification of the Flexibilia (Echinodermata)Wright, David F.; Toom, UrsulaPalaeontology2017 / p. 893-910 : ill https://doi.org/10.1111/pala.12324 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS