Macropalaeontological works on the bivalve Dimya pamplonensis (Calzada and Astibia, 1996), turtles and sirenians (Astibia et al., 1999; 2005; 2006; Buffrenil et al., 2008), and sponges and corals (Astibia et al., 2014) have been published in the latest years.
With the exception of a brief note on Dimya pamplonensis (Calzada and Astibia, 1996) nothing has been published to date about the fossil molluscs.
bifrons, Dimya pamplonensis and indeterminate ostreoids, the barnacle Arcoscalpellum sp., echinoid spines and test fragments (Cidaridae and others), asteroid ossicles, and the chondrichthyans Hexanchus agassizi, Macrorhizodus praecursor, Anomotodon sp.
caldesensis, Dimya pamplonensis and Chama granulosa, among others and its absence in the Itzagaondoa localities; on the contrary (3) the abundance of phytophagous gastropod Diastoma costellatum in the Itzagaondoa outcrops and its scarcity in the Ardanatz outcrops; and (4) the presence of Moniquia sp., Sassia sp., Niso sp., Metula (Celatoconus) sp., Mathilda sp., Pycnodonte brongniarti, Spondylus planicostatus, Spondylus sp.
Dimya pamplonensis (Carez, 1881) Venericardia junctinova Cossmann, 1897 Chama pellati Boussac, 1911 Chama granulosa d'Archiac, 1850
ERDEM, Gokhan, "Stephen KINZER, Hilal ve Yildiz, Iki
Dimya Arasmda Turkiye, Istanbul, Iletisim Yaymevi, 2003", Cilt 1, No 2, Bahar 2004, s.