Temporal range: Late Carboniferous to Late Triassic 312–201.3 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Range possibly includes turtles
Anapsid skull
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Informal group:
Anapsida Williston, 1917
Subgroups
†Captorhinidae
†Protorothyrididae
†Parareptilia
†Mesosauria
†Millerosauria
†Procolophonomorpha
Testudines (Turtles, tortoises & terrapins)
An anapsid is an amniote whose skull lacks one or more skull openings (fenestra, or fossae) near the temples.[1] Traditionally, the Anapsida are considered the most primitive subclass of amniotes, the ancestral stock from which Synapsida and Diapsida evolved, making anapsids paraphyletic. It is, however, doubtful that all anapsids lack temporal fenestra as a primitive trait, and that all the groups traditionally seen as anapsids truly lacked fenestra.
^Pough, F. H. et al. (2002) Vertebrate Life, 6th ed. Upper Saddle River, New Jersey: Prentice Hall. ISBN 0-13-041248-1
An anapsid is an amniote whose skull lacks one or more skull openings (fenestra, or fossae) near the temples. Traditionally, the Anapsida are considered...
the ancestral amniote had an anapsid-like or synapsid-like skull. These animals are traditionally referred to as "anapsids", and form a paraphyletic basic...
2012. Retrieved January 19, 2012. "Emaciation (Starvation) Protocol". Anapsid.org. Dec 2009. Retrieved January 19, 2012. Media related to Emaciation...
the Carboniferous. It was traditionally assumed that first reptiles were anapsids, having a solid skull with holes only for the nose, eyes, spinal cord,...
lacking holes behind the eyes. Nevertheless, not all parareptiles have 'anapsid' skulls, and some do have large holes in the back of the skull. They also...
Retrieved 8 July 2016. Kaplan, Melissa. "So, you think you want a reptile?". Anapsid.org. Archived from the original on 3 July 2016. Retrieved 8 July 2016....
Paleothyris was a small, agile, anapsid romeriidan reptile which lived in the Moscovian (Carboniferous) age of the Late Carboniferous in Nova Scotia....
(1994). "The Keeping of Large Pythons: Realities and Responsibilities". www.anapsid.org. Herp Care Collection. Retrieved 2019-02-18. "Python Caused Death in...
adaptations to a fully aquatic lifestyle. It is usually considered to have been anapsid, although Friedrich von Huene considered it to be a synapsid. Recent study...
appeared from labyrinthodonts in the subsequent Carboniferous period. The anapsid and synapsid amniotas were common during the late Paleozoic, while the...
known fossil reptiles (anapsids), it is possible it is a more recently evolved trait in sea turtles, placing them outside the anapsids. Sea turtles, along...
some early reptiles like captorhinids and parareptiles. Turtles have an anapsid skull, but this was likely acquired secondarily from a diapsid ancestor...
possessed an anapsid skull configuration. Later, the consensus shifted towards Testudinata's placement within Parareptilia, another "anapsid" clade. Analysis...
pareiasaurs. All anapsid skulls lack a temporal opening while all other living amniotes have temporal openings. It was later suggested that the anapsid-like turtle...
S2CID 8344876. "The Diet of a Generalized Folivore: Iguana iguana in Panama". www.anapsid.org. Retrieved 2024-02-05. Look up folivore in Wiktionary, the free dictionary...
trend towards differentiation is found in some labyrinthodonts and early anapsid reptilians in the form of enlargement of the first teeth on the maxilla...
refers to large plates of armor scattered across its body. It was a large anapsid reptile that, unlike most reptiles, held its legs underneath its body to...
text of the 1906 New International Encyclopedia article "Garter-snake". Anapsid.org: Garter snakes Several pictures of a Mexican ribbon snake (Thamnophis...
ISBN 978-1-4214-0135-5. ("Bosc", p. 32). Kaplan, Melissa. "Savannah Monitors". www.anapsid.org. Bennett, Daniel; Ravi Thakoordyal (2003). The Savannah Monitor, the...
seen sunning themselves for warmth. The smooth softshell turtle has an anapsid skull, a type of skull structure that was present among the earliest groups...
and also their lack of clear affinities with other reptile groups, as anapsids were supposed to be little specialised. This hypothesis has become unpopular...
particular the number of temporal fenestrae (openings) behind each eye. In anapsids, the ancestral condition, there are none, in synapsids (mammals and their...
The Guardian – via www.theguardian.com. "The Keeping of Large Pythons". Anapsid. Retrieved 16 September 2007. "Large Constrictor Snake Attacks" (PDF)....
been called "a diapsid reptile in the process of becoming secondarily anapsid". Olivier Rieppel summarizes the phylogenetic origins of the ancestral...
group (often thought to be the ancestors of mammals) Subclass Anapsida – anapsids Class Mammalia – mammals Subclass Prototheria – egg-laying mammals, including...
Global Information
