A group or classification of prehistoric creatures, possibly referring to those with exceptionally large or formidable heads.
From Greek 'deinos' (terrible, fearful) plus 'kephalē' (head). This appears to be a scientific taxonomic term combining the 'deino-' prefix with cranial descriptors.
Paleontology loves dramatic Greek names—'deinocephalia' groups creatures with notably powerful or scary skulls, which helped early scientists organize the bewildering variety of prehistoric life.
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