Abstract 

Krautter, M. (1994): Observations on Eudea clavata Lamouroux (Calcarea) from the Upper Jurassic of Portugal. In: van Soest, R.W.M., van Kempen, Th.M.G. & Braekman, J.C. (eds) Proc. 4th Internat. Porifera Congress "Sponges in Time and Space" Amsterdam 1993, 29-34, 12 figs.; Amsterdam (Balkema).

Observations on Eudea clavata Lamouroux (Calcarea) from the Upper Jurassic of Portugal

Abstract: Calcified soft body preservation allows the description of the canal system and choanocyte chambers of Eudea clavata Lamouroux for the first time. The spicules of Eudea clavata are mostly represented by diactins. To a lesser degree triactins and tetractins are present. Hook-like spicules are a rarity. The ability to close the pores allowed Eudea clavata to withstand an elevated sedimentation rate, at least for a longer period of its lifetime. Hence, the species was able to live in a marly environment, provided small skeletal debris was available for attachement.

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