dermal bone

It is a dermal bone derived from elements originally attached to the skull.

The head and pectoral girdles are covered with large dermal bones.

The bones are derived from dermal bone, hence the alternative name dermatocranium.

In bony fish, dermal bone is found in the fin rays and scales.

The skull table is highly ornamented in larger specimens, with the dermal bones well sculptured.

Some species also have dermal bones in the plastron, but these are not attached to the bones of the shell.

Special examples of dermal bones include the clavicle, patella, and os cordis.

The microstructure of dermal bones in Arthrodires.

In contrast to endochondral bone, dermal bone does not form from cartilage that then calcifies.

The primitive form Ophiderpeton has a pattern of dermal bones in the skull similar in respects to the temnospondyls.

In some discoveries ribs were found associated with gastralia, dermal bones which located in the ventral region of the body.

Bony fishes have additional dermal bone, forming a more or less coherent skull roof in lungfish and holost fish.

As such the carapace is made up of 8 pleurals on each side, these are a combination of the ribs and fused dermal bone.

The dermal bones gradually evolved into a fixed unit overlaying the endocranium like a heavy "lid", protecting the animals head and brain from above.

Gastralia (singular gastralium) are dermal bones found in the ventral body wall of crocodilian and Sphenodon species.

These bony rods are not extensions of the ribs but are newly evolved dermal bones, a feature which is unique to the genus.

Above these dermal bones lie even larger dermal plates that directly overly even numbered neural spines.

The sensory Lines and dermal Bones of the Cheek in Fishes and Amphibians.

A cleithrum is a type of dermal bone that overlies the scapula, and is usually found in more primitive bony fish and tetrapods.

Many had hypocercal tails in order to generate lift to increase ease of movement through the water for their armoured bodies, which were covered in dermal bone.

Dermal bone is formed within the dermis and grows by accretion only - the outer portion of the bone is deposited by osteoblasts.

An interparietal bone (os interparietale or Inca bone) is a dermal bone situated between the parietal and supraoccipital.

The carapace is the dorsal (back), convex part of the shell structure of a turtle, consisting of the animal's ribcage combined with dermal bone.

The holotype specimen, cataloged as AMNH 9503, is a partial skull with the ventral surface of the dermal bones present.

A small dermal bone overlies each space between the posterior expansion of one distal neural spine and the anterior expansion of the one behind it.