A New Ichnogenus for Crustacean Trace Fossils from the Upper Miocene Camacho Formation of Uruguay |
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Authors: | Mariano Verde,& Sergio Martí nez |
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Affiliation: | Departamento de Paleontología de la Facultad de Ciencias, INGEPA, Universidad de la República, Uruguay |
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Abstract: | Maiakarichnus currani ichnogen. et isp. nov. is a crustacean trace fossil from the Upper Miocene Camacho Formation of Uruguay. This trace fossil is a subspherical chamber preserved in full relief, with numerous thin shafts radiating in a stratigraphically upward direction mainly from its upper part and from the sides. In the Camacho Formation it can be found intergrading with Ophiomorpha and Thalassinoides . Previous (unnamed) findings of similar material are only from the Pamlico Morphostratigraphic Unit (Pleistocene) of North Carolina; these have been interpreted as callianassid brood structures. In this paper we also interpret Maiakarichnus as a brood structure of callianassid origin based on its association with Thalassinoides and Ophiomorpha . |
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Keywords: | Maiakarichnus currani crustacean trace fossil Miocene Uruguay |
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