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Itemiridae (disused)
Taxonomy
Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Itemiridae Kurzanov p. 361 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Itemiridae Kurzanov 1976
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. M. Kurzanov 1976 | Small predatory dinosaurs. Basipterygoid processes large, triangular, with an oval depression on the side. Spheno-occipital tubercles broad and massive, Carotid canals merging in front and opening into the hypophysial fossa as a single orifice. Brain cavity short, high in the region of the cerebellum by virtue of the deveopment of the parietal body. Immediately above the vestibule of the membranous labyrinth there is a deep bony recess surrounded along the perimeter by the anterior semicircular canal and the crus communis. The orifice of the endolymphatic duct is located on the lateral margin of the occipital foramen. The opening of the trigeminal nerve is unified externally and internally. The jugular orifice is located directly beneath the vestibular cavity. The middle cerebral vein enters and leaves the neurocranium through special openings. The floor of the brain cavity is hravily concave. |
Measurements
No measurements are available
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| Source: infrao = infraorder, o = order | |||||
| References: Marsh 1875, Benton 1983 | |||||
Collections
No collection or age range data are available