有哪些信誉好的足球投注网站ancient nursery area for the extinct giant shark megalodon from the miocene of panama古代为灭绝巨型鲨鱼托儿所区域megalodon中新世的巴拿马.pdfVIP
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ancient nursery area for the extinct giant shark megalodon from the miocene of panama古代为灭绝巨型鲨鱼托儿所区域megalodon中新世的巴拿马
Ancient Nursery Area for the Extinct Giant Shark
Megalodon from the Miocene of Panama
Catalina Pimiento1,2,3*, Dana J. Ehret2,4, Bruce J. MacFadden2,5, Gordon Hubbell6
1 Department of Biology, University of Florida, Gainesville, Florida, United States of America, 2 Division of Vertebrate Paleontology, Florida Museum of Natural History,
Gainesville, Florida, United States of America, 3 Center of Paleoecology and Archaeology, Smithsonian Tropical Research Institute, Panama, Republic of Panama, 4 School
of Natural Resources and Environment, University of Florida, Gainesville, Florida, United States of America, 5 Division of Research on Learning (DRL), Education and Human
Resources (EHR), National Science Foundation, Arlington, Virginia, United States of America, 6 Jaws International, Gainesville, Florida, United States of America
Abstract
Background: As we know from modern species, nursery areas are essential shark habitats for vulnerable young. Nurseries
are typically highly productive, shallow-water habitats that are characterized by the presence of juveniles and neonates. It
has been suggested that in these areas, sharks can find ample food resources and protection from predators. Based on the
fossil record, we know that the extinct Carcharocles megalodon was the biggest shark that ever lived. Previous proposed
paleo-nursery areas for this species were based on the anecdotal presence of juvenile fossil teeth accompanied by fossil
marine mammals. We now present the first definitive evidence of ancient nurseries for C. megalodon from the late Miocene
of Panama, about 10 million years ago.
Methodology/Principal Findings: We collected and measured fossil shark teeth of C. megalodon, within the highly
productive, shallow marine Gatun Formation from the Miocene of Panama. Surprisingly, and in contrast to other fossil
accumulations, the
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