English: Fig. 3 Vetulicola rectangulata infested by Vermilituus gregarius.a,bYKLP 13073, left view of the internal mould of the anterior section (incomplete) and

part of the posterior section. Specimen infested with circa 46 V. gregarius, with one aggregate toward the anterodorsal area (seen in “b”) comprising 29 specimens. c–fYKLP 13075, left view of the internal mould of the anterior section, and composite mould of the posterior section infested with 88 V. gregarius, including three aggregates of between 10 and 25 specimens (e.g., seen in “e”), and concentration of 24 specimens along the central groove (close-up in “f”): note that these are oriented with the narrow end associated with the groove. This specimen also shows four specimens in the tail (“d”). g,hYKLP 13074, right view of the internal mould of the anterior section infested with about 52 V. gregarius that form aggregates of between 5 and 14,

including those that preserve annulation (“h”). Scale bars: a,c,g, 1 mm; b,d,e,f,h2 mm.