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Related to Anterior cranial fossa: Posterior cranial fossa, Middle cranial fossa


carnivorous mammal, Cryptoprocta ferox, of Madagascar. The island's largest carnivore, the fossa resembles a pumapuma
or cougar
, New World member of the cat family, Puma concolor. Also known as mountain lion, catamount, panther, and painter, it ranges from S British Columbia to the southern tip of South America. The puma is slenderly built, with a lionlike face.
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 in appearance and has semiretractable claws, but it is most closely related to Madagascar's other native carnivores and to the mongoosemongoose,
name for a large number of small, carnivorous, terrestrial Old World mammals of the civet family. They are found in S Asia and in Africa, with one species extending into S Spain.
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 and civetcivet
or civet cat,
any of a large group of mostly nocturnal mammals of the Old World family Viverridae (civet family), which also includes the mongoose. Civets are not true cats, but the civet family is related to the cat family (Felidae).
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. Its slender body may be more than 5 ft (1.5 m) long including the tail, which makes up about half of the total length, and the largest males may weigh as much as 26 lb (12 kg). The female is somewhat smaller. The coat is generally reddish brown above and cream below.

The fossa is found in both humid and dry forests and is an agile climber. A generally solitary animal, it preys on lemurs, wild pigs, and other mammals as well as fish and birds; it hunts by ambush. During mating season several males compete for a female, who rests high in a tree; the tree may be used for mating, and then used as a mating ground by another female when the first leaves. There are two to four young in a litter. The young are blind and helpless when born, and remain the mother for about a year and a half. Largely because of habitat destruction, the fossa is endangered.

The fossa is classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Carnivora, family Eupleridae.

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(foss -ă) (plural: fossae) a long narrow shallow depression. The word is used in the approved name of such a surface feature on a planet or satellite.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(Cryptoprocta ferox), a predatory mammal of the family Viverridae. The body measures as much as 76 cm in length and as much as 37 cm in height; the tail measures approximately 65 cm in length. The fossa, the largest predator of the island of Madagascar, has a massive body with relatively long, thick extremities and semiretractile claws. It somewhat resembles a cat, but the head is longer. The fur is short, smooth, and reddish brown.

The fossa inhabits forests and feeds on birds and small mammals. It is terrestrial but may climb trees when chasing lemurs. It is active at night. The animal attacks domestic fowl and young domestic swine.


Mammals of the World, vol. 2. Baltimore, Md., 1964.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A pit or depression.
(vertebrate zoology)
Cryptoprocta ferox. A Madagascan carnivore related to the civets.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Skull base coronal thin-section CT scan showed a fracture in the right side of ethmoid plate, and MR cisternography revealed high-signal-intensity CSF column in the right side of the floor of anterior cranial fossa and sinus [[Figure 1]-case 2].
Brain magnetic resonance imaging (MRI) revealed a mass at the anterior cranial fossa in the midline, in front of the lateral ventricles with compression of the third ventricle of the brain.
It is situated at the roof of the nasal cavity and is the most delicate part of the anterior cranial fossa. Here, the bony structures are very thin and the dura is tightly attached to bone.
High resolution CT and MRI are useful to delineate the exact extent of the Tumor and to define the involvement of the cribriform plate and the anterior cranial fossa. In 25% of the patients the Dura and the anterior cranial fossa is invaded.
Computed tomography (CT) of the sinuses demonstrated a large, enhancing mass within the left ethmoid sinus; CT also showed tumor erosion through the anterior cranial fossa and the left lamina papyracea and compression of the medial rectus muscle and optic nerve (figure 1).
It spreads through submucosal planes to the surrounding structures and involves anterior cranial fossa destroying the cribriform plate with propagation along the perineural spaces of olfactory nerves.
We present a case in which a 23-year-old male patient diagnosed with nasoseptal chondrosarcoma with anterior cranial fossa extension underwent combined surgical approaches to optimize complete resection of the tumor.
Table 10: Showing skull base fractures Cranial Fossa involvement Total number of cases Anterior cranial fossa 11 Middle cranial fossa 15 Posterior cranial fossa 03 Table 11: Showing the anatomical location fracture of vault of skull Anatomical location Number Percentage Frontal 21 21.87 Parietal 18 18.75 Temporal 58 60.41 Occipital 09 9.37 Combination 28 29.16 Meningeal injury: Meninges were intact in 169 cases, torn in 27 cases and crushed in 09 cases.
Axial images were obtained on a plane parallel to the floor of the anterior cranial fossa, and coronal images were obtained on a plane perpendicular to the hard palate.
Radiographs of skull showed sclerosis and thickening of orbital rims (Fig 3) and anterior cranial fossa. Sella turcica was small.
These arteries and nerves exit the ethmoidal foramina and enter the anterior cranial fossa at the lateral edge of the cribriform plate." (16)

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