Since 1973, when frogs skulls were last comprehensively surveyed, scientists have documented enough new species to double the number known to humans. Also, modern techniques exploit CT scans, of which Paluh and his team made liberal use. The data came from the National Science Foundation 's oVert project, whose goal is to comprehensively CT-scan over 20,000 vertebrate specimens from United States museums.
Since 1973, when frogs skulls were last comprehensively surveyed, scientists have documented enough new species to double the number known to humans. Also, modern techniques exploit CT scans, of which Paluh and his team made liberal use. The research was part of the oVert project, funded by the National Science Foundation , meant to comprehensively CT-scan over 20,000 vertebrate specimens from United States museums.
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