Measurement of skull ossification patterns is a standard method for aging various mammalian species and has been used to age Russian, Californian, and Alaskan sea otter populations. Cementum annuli counts have also been verified as an accurate aging method for the Alaskan sea otter population. In this study, cementum annuli count results and skull ossification patterns were compared as methods for aging the northern sea otter (Enhydra lutris kenyoni) population in Washington State. Significant agreement was found between the two methods suggesting that either method could be used to age the Washington population of otters. This study also found that ossification of the squamosal-jugal suture at the ventral glenoid...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Age determination,
Clallam,
Grays Harbor,
Jefferson,
Pacific, All tags...
USGS Science Data Catalog (SDC),
Washington,
age estimation methods,
cementum annuli,
dental assessment,
morphometry,
skull ossification,
tooth eruption,
tooth wear, Fewer tags
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