page_title: Endocranium
section_title: The endocranium in fish
hierarchical_section_title: Endocranium / Other animals / The endocranium in fish
caption_attribution_description: Fish head parts
context_page_description: The endocranium in comparative anatomy is a part of the skull base in vertebrates and it represents the basal, inner part of the cranium. The term is also applied to the outer layer of the dura mater in human anatomy.
context_section_description: While the endocranium is an integral part of the skull in mammals, birds and reptiles, its connection to the roofing parts of the skull is more loose in the lower vertebrates. In Agnathans and Chondrichthyes, the skull lacks the skull roof dermal elements, their whole cranium being composed of the endocranium, properly called a chondrocranium. In most Osteichthyes, the skull is only loosely joined, and the endocranial elements do not form a unit with the skull roof.
caption: The loosely connected skull of a perch.
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