-
groups to the
major lines of
jawless and
jawed fish.
Thelodonts are
united in
possession of "
thelodont scales". This
defining character is not necessarily...
- and
reduce surface resistance when the fish swims. The bony
scales of
thelodonts, the most
abundant form of
fossil fish, are well understood. The scales...
- the high
point of
their evolution. Most of the ostracoderms, such as
thelodonts, osteostracans, and galeaspids, were more
closely related to the gnathostomes...
-
control of
their swimming. It was long ****umed that
pteraspidomorphs and
thelodonts were the only
ostracoderms with
paired nostrils,
while the
other groups...
-
genus of
thelodont agnathan that
lived during the
Silurian period.
Fossils have been
found in Europe, Asia and
North America.
Unlike many
thelodonts, species...
-
Lanarkia is a
genus of
extinct thelodont agnathan which existed in what is now
Scotland and
Canada during the
upper Silurian period.
There are two species...
-
entirely from
scale fossils,
taxonomy of
thelodonts is
based primarily on
scale morphology. A 2009 ****essment of
thelodont taxonomy by
Wilson and Märss merges...
- Ivan J.; Smith, Moya M.; Smith, M. Paul (15
February 1996). "Scales of
thelodont and shark-like
fishes from the
Ordovician of Colorado". Nature. 379 (6566):...
-
Archipelepis is a
genus of
extinct thelodont agnathans, and are the most
primitive recognized thelodonts of
which whole body
fossils are known. Fossils...
-
Erepsilepis is an
extinct thelodont agnathan genus in the
family Phlebolepididae. List of
prehistoric jawless fish
genera List of
thelodont genera Märss, Tiiu;...
