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| Stegosiren | |
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| Stegosiren skeleton atMace Brown Museum of Natural History | |
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| Genus: | Stegosiren |
Stegosiren was an earlysea cow from theMiddle Oligocene of South Carolina, US. It shows a stage ofhalitheriine evolution more derived than that of the Old World early OligoceneEosiren imenti andHalitherium schinzii.
Fossils of Stegosiren are known from theMiddle Oligocene of South Carolina, US.[1]
As of March 2021, the addition ofStegosiren macei to the list of potentiallysympatric sirenian species lineages known from the West Atlantic-Caribbean Oligocene brings the total number of those to at least seven.[1]
The species is from the Ashley andChandler Bridge Formations in South Carolina (lateRupelian–lateChattian) and reflect a stage of halitheriine evolution more derived than that of the Old World early OligoceneEosiren imenti andHalitherium schinzii, but slightly less derived than the West Atlantic late OligoceneMetaxytherium albifontanum.[1] Its early Oligocene contemporariesCaribosiren turneri andPriscosiren atlantica are more similar in stage of evolution, and it may be a sister taxon to these two. Stegosiren is differentiated from all other sirenians by a noticeably broadened head.[1]
Ecomorphology and feeding-niche partitioning are complicated by the sirenian diversity.[1]
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