Dr. Fűköh Levente szerk.: Malakológiai Tájékoztató 16. (Eger, 1997.)
DÁVID, Á.: Predation by Muricid Gastropods on Late-Oligocene (Egerian) Molluscs Collected from Wind Brickyard, Eger, Hungary
Hadriana egerensis (GÁBOR) Galeodes basilica (BELLARDI) 3 1 1 5 3 11 2 1/0/2 0/0/1 1/0/lm 4/1/0 3/1/lm 7/0/6m 5/1/0 m Tortoliva subcanalifera (ORBIGNY) Athleta rarispina (LAMARCK) Turris duchasteli (NYST) Turricula reguláris (KÖNINCK) Terebra simplex T.-ROTH All the successful borings can be found on gastropod shells. I have observed the occurrence of multiplied borings /m/, too. In this case more than one boring can be seen on the shell. There is a four cm long Terebra simplex shell in the collected material with four successful and an unsuccessful borings. There are eleven epibenthonic species and ten inbenthonic species among the molluscs bearing traces of Muricid prédation. Regarding the feeding habits scavengers and suspensionfeeders are dominant in the collected material. The importance of depositfeeders, herbivores and parasites is very low. Distribution of bored molluscs according to feeding habits shows the similar picture. Dominancy of scavengers and suspensionfeeders can be observed. 3.3 Limonitic sandstone ("k" layer) 8483 specimens of 113 species have been examined. These belong into the following molluscan classes: Bivalves 42 species 1858 specimens, Gastropods 65 species 6607 specimens, Scaphopods 5 species 14 specimens, Cephalopods 1 species 4 specimens. Muricid drillholes have been found on the shells of bivalves and gastropods. Sign of Muricid prédation is born by 104 specimens of twenty-seven species. The number of borings are 120. Bivalves: Ostrea cyathula LAMARCK Isocardia subtransversa abbreviata SACCO Taras rotundatus (MONTAGU) Pitar polytropa ANDERSON 27 1 2 5 1/0/0 2/0/0 5/0/0 16/0/14 m Gastropoda: Jujubinus multicingulatus praestrigosus BÁLDI Turritella venus margarethae GAÁL Turritella beyrichi percarinata T.-ROTH Melanopsis impressa hantkeni HOFMANN Tympanotonus margaritaceus (BROCCHI) 3 4 4 2 2 3/0/0 4/0/0 7/0/0 m 3/0/0 m 2/0/0
