-
natural groups, and
because thecodonts are a
paraphyletic group (they
include among their descendants animals that are not
thecodonts), the term is no longer...
-
classifying organisms,
thecodonts were no
longer considered a
valid grouping.
Because they are
considered a "basal stock",
thecodonts are paraphyletic, meaning...
-
abandoned in
favor of the idea of them
being descendants of
generalized thecodonts, with the key
piece of
evidence being the
supposed lack of
clavicles in...
-
front of the eyes).
Reptiles with
these traits have also been
termed "
thecodonts" in
older methods of classification.
Thecodontia is a
paraphyletic group...
-
Thecodont dentition is a
morphological arrangement in
which the base of the
tooth is
completely enclosed in a deep
socket of bone, as seen in crocodilians...
-
crurotarsans (large
archosaurian reptiles previously grouped together as the
thecodonts) disappeared, as did most of the
large labyrinthodont amphibians, groups...
-
British paleontologist Alick Walker hypothesized that
birds arose not from '
thecodonts' but from
crocodile ancestors like Sphenosuchus. Ostrom's work with both...
-
considered it a "pseudosuchian" (then a
collection of
various non-dinosaurian "
thecodonts"). In 1972 he
named a
second species,
Lagosuchus lilloensis,
known from...
- Rhynchocephalia, Rhynchosauria, Choristodera, Thalattosauria, Crocodilia, "
thecodonts" (paraphyletic
basal Archosauria), non-avian dinosaurs,
pterosaurs and...
- archosaurs. The name
Pseudosuchia became a
wastebasket taxon into
which all
thecodonts that did not fit in the
other three suborders could be placed. Even Sharovipteryx...
