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Fish of the genera Lamna, Galeus, and Carcharodon are common to New Jersey and the European cretaceous rocks. So also is the genus Mosasaurus among reptiles. It appears from the labours of Dr.
The compressed form and diminutive size of certain caudal vertebrae indicate so much analogy with Hydrus as to induce Professor Owen to pronounce this extinct ophidian to have been marine. The teeth of sharks also, of the genera Carcharodon, Otodus, Lamna, Galeocerdo, and others, are abundant. Lucina serrata, Sowerby.
In August, 1878, a small specimen of the mackerel-shark, Lamna cornubica, was captured at the mouth of Gloucester Harbor. In its nostril was sticking a sword, about three inches long, of a young swordfish. When this was pulled out the blood flowed freely, indicating that the wound was recent. The fish to which this sword belonged cannot have exceeded ten or twelve inches in length.
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