In some extant ectotherms, the third eye (or pineal eye) is a photosensitive organ located in
the parietal foramen on the midline of the skull roof. The pineal eye sends information …

The third eye (pineal eye), an organ responsible for regulating exposure to sunlight in extant
ectotherms, is located in an opening on the dorsal surface of the skull, the parietal foramen …

The pineal and parapineal organs are dorsal outpocketings of the vertebrate diencephalon
that play key roles in orientation and in circadian and annual cycles. Lampreys are four eyed …

I describe the anterior part of the externally poorly preserved skull of a therocephalian from
the Karoo Basin in South Africa, using the method of serial grinding. The skull is incomplete …

The special sensory, motor, and cognitive capabilities of mammals mainly depend upon the
neocortex, which is the six‐layered cover of the mammalian forebrain. The origin of the …

The foramen for the mandibular division of the trigeminal nerve opens between the periotic
and alisphenoid bones in all known therapsid reptiles (including ictidosaurs and tritylodonts) …

Historically, the whaitsiid therocephalian Theriognathus Owen was one of the earliest
described nonmammalian therapsids, its morphology helping to link phylogenetically the …

Distributional patterns of eye lens variation in different morphs of the phacopine trilobite
Acuticryphops acuticeps (Kayser 1889) are investigated. The specimens were collected from …

Choerosaurus dejageri, a non-mammalian eutheriodont therapsid from the South African
late Permian (~ 259 Ma), has conspicuous hemispheric cranial bosses on the maxilla and …

Although no one has disputed that the piscine progenitors of the tetrapods have a
homologue of the human parietal bone, opinions differ as to where in the skull roof this …