About 120 results for ‘Anapsid’
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Anapsid
An anapsid is an amniote whose skull does not have openings near the temples. While "anapsid reptiles" or "anapsida" were traditionally spoken of as if they were a monophyletic group, it has been suggested that several groups of reptiles that had anapsid skulls may be only distantly related. Scientists still debate the exact relationship between the basal (original) reptiles which first appeared in the late Carboniferous, the various Permian reptiles which had anapsid skulls, and the Testudines. However, it was later suggested the anapsid-like turtle skull may be due to reversion rather than to anapsid descent. The majority of modern paleontologists believe the Testudines are descended from diapsid reptiles which lost their temporal fenestrae. More recent morphological phylogenetic studies with this in mind placed turtles firmly within diapsids, some place turtles as a sister group to extant archosaurs or, more commonly within Lepidosauromorpha. Some modern paleontologists still believe that Testudines are the only surviving branch of this ancient evolutionary grade, which includes groups such as procolophonids, millerettids, and pareiasaurs, although that view is not generally accepted. All molecular studies have strongly upheld the placement of turtles within diapsids; some place turtles within Archosauria, or, more commonly, as a sister group to extant archosaurs. However, one of the the most recent molecular studies, published in 23 February 2012, suggests that turtles are lepidosauromorph diapsids, most closely related to the lepidosaurs. Reanalysis of prior phylogenies suggests they classified turtles as anapsids both because they assumed this classification (most of them studying what sort of anapsid turtles are) and because they did not sample fossil and extant taxa broadly enough for constructing the cladogram. Testudines were suggested to have diverged from other diapsids between 200 and 279 million years ago, though the debate is far from settled. Most of the other reptiles with anapsid skulls, including the millerettids, nycteroleterids, and pareiasaurs, became extinct in the late Permian period by the Permian-Triassic extinction event. But the procolophonids managed to survive into the Triassic.
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- Field(s):
- Ceramic
- Ethnology
- Pre-Columbian era
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Designation:
- statuette (zoomorphe)
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- Portrayed subject:
- Anapsid
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- Date:
- 20th century
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- Artist(s):
- Auguste Rodin
DEUX ENFANTS SUR UNE TORTUE AU RECTO ; VISAGE BRAS ET JAM...
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- Field(s):
- Drawing
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- Portrayed subject:
- Anapsid
- Child
- Crus (lower leg)
- Face
- Upper limb
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- Date:
- 19th century
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- Artist(s):
- Pieter Claesz
NATURE MORTE AUX INSTRUMENTS DE MUSIQUE
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- Field(s):
- Painting
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- Date:
- 17th century
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LE CONCERT DANS L'OEUF
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- Field(s):
- Painting
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- Portrayed subject:
- Alchemy
- Anapsid
- Bar (establishment)
- Egg (food)
- Fish
- Hand
- …
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- Date:
- 16th century
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- Artist(s):
- Nicolas-Guy Brenet
Allégorie autour du buste d'Henri IV et d'un médaillon re...
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- Field(s):
- Painting
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- Date:
- 18th century
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- Artist(s):
- Alexandre-Gabriel Decamps
SOUVENIR DE LA TURQUIE D'ASIE : ENFANTS TURCS JOUANT AVEC...
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- Field(s):
- Painting
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- Portrayed subject:
- Anapsid
- Child
- Entertainment
- Flower
- Individual
- Still life
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- Date:
- 19th century
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- Artist(s):
- Gustave Moreau
Reproduction du tableau de Gustave Moreau, Orphée du Salo...
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- Field(s):
- Photography
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- Date:
- 19th century
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Appartement de Gustave Moreau : un crâne dans une coupe, ...
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- Field(s):
- Photography
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- Portrayed subject:
- Anapsid
- Chest of drawers
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Vénus à la tortue, accroupie, nue
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- Field(s):
- Sculpture
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- Portrayed subject:
- Anapsid
- Venus (mythology)
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- Date:
- 19th century
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