View - Kowalewski, M. - Virginia Tech

PALEONTOLOGICAL SOCIETY PAPERS, V. 8, 2002TABLE 3—Shell repair in bivalves and gastropods from Mesozoic and Cenozoic Localties. Only papers that cite their raw data, or semblanceof such, are included in this table. According to Vermeij (1982, p. 233), the higher the frequency of scars, the greater is the role of the shellin protecting the gastropods against lethal breakage; if selection for armor is weak, then the frequency of repair should be low. The exceptionalpreservation required to detect shell repair is rare, especially in Paleozoic and Mesozoic gastropods (Vermeij et al., 1981).Taxonomic Group;Age/Locality;ReferenceEvidence of ShellRepairCalculation of ShellRepair FrequencyRange/Mean/median frequencyGastropodsUpper Triassic; Northern Italy, St.Cassian Group, dolomites;species describedVermeij et al.(1982)Broken edge is repaired;tiny chips ignored; somehad only body whorlsexposed, so not all shellareas were examined;small shells examined(