Plural formation in Istro-Romanian numeral quantifier phrases: inflexional calquing from Croatian?

We explore the effects of prolonged contact with Croatian on the inflexional morphology of number-marking in the Istro-Romanian noun. One result of a reorganization of the nominal system is that certain bisyllabic plural desinences, originally associated with feminine gender, are reassigned to the masculine, and come to exist alongside other modes of masculine plural marking. The resultant variation in masculine plural inflexion becomes subject to new patterns of distribution which are clearly sensitive to Croatian models, including the exaptation of masculine plural morphology to provide distinctive specialized morphological marking of plurals in certain numeral quantifier expressions for ‘smaller’ numbers, in ways clearly reminiscent of Croatian. What is involved is a complex array of ‘pattern’ borrowing, although there is also some evidence for ‘matter’ borrowing of a dialectal Croatian plural ending which Istro-Romanian sometimes uses in numeral quantifier phrases with higher numerals. Overall, we seem to be in the presence of an emergent ‘numerative’. While the creation of numeratives is well known from the internal history of various languages, our data may show that they may also emerge through language contact.