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Extra teeth and dental anomalies in the crested porcupine Hystrix cristata, from Sicily

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We examined 181 skulls of crested porcupine Hystrix cristata Linnaeus, 1758 from Sicily, mainland Italy, and from several African countries. Two skulls, both from Sicily, had anomalous dentition. One skull exhibited a case of supernumerary dentition, whereas the other one showed a dental malformation with numerary teeth reduction. The type of anomaly was determined in each skull examined and some hypotheses for explaining these anomalies were presented.
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