The dawn of an Era: New contributions on comparative and functional anatomy of Triassic tetrapods
The Anatomical Record,
Год журнала:
2024,
Номер
307(4), С. 713 - 721
Опубликована: Фев. 12, 2024
Abstract
The
Triassic
period
stands
as
a
crucial
moment
for
understanding
tetrapod
evolution,
marking
the
emergence
and
early
diversification
of
numerous
lineages
that
persist
in
today's
ecosystems.
Birds,
crocodiles,
testudines,
lizards,
mammals
can
all
trace
their
origins
to
Triassic,
which
is
distinguished
by
several
adaptive
radiation
events
fostered
unparalleled
diversity
body
plans
lifestyles.
Beyond
this
macroevolutionary
significance,
serves
fertile
ground
scientific
inquiry,
especially
studies.
aim
Special
Issue
assemble
diverse
array
new
contributions
focused
on
continental
tetrapods
globally,
encouraging
collaboration
among
researchers
across
generations,
pooling
efforts
comprehend
pivotal
evolutionary
history.
This
issue
encompasses
almost
40
varied
contributions,
spanning
topics
from
comparative
functional
anatomy,
including
descriptions
novel
taxa,
comprehensive
anatomical
reviews,
systematic
investigations,
phylogenetic
analyses,
paleoneurological
studies,
biomechanical
assessments,
detailed
examinations
histology
ontogeny.
Collectively,
offers
an
extensive
exploration
anatomical,
ecological,
perspectives,
unveiling
fresh
insights
into
intriguing
vertebrate
Язык: Английский
Biostratigraphic significance of a new record of Protuberum cabralense , a bizarre traversodontid cynodont from the Middle‑Late Triassic of Southern Brazil
Historical Biology,
Год журнала:
2024,
Номер
unknown, С. 1 - 9
Опубликована: Сен. 25, 2024
Язык: Английский
Paleoneurology and neuroanatomical notes on the South American “rauisuchian” Saurosuchus galilei from the Ischigualasto formation, San Juan, Argentina
The Anatomical Record,
Год журнала:
2023,
Номер
307(4), С. 1239 - 1253
Опубликована: Дек. 22, 2023
Abstract
Non‐crocodylomorph
loricatans,
traditionally
known
as
“rauisuchians,”
are
considered
the
top
predators
of
Triassic
continental
faunas
that
reigned
before
emergence
well‐known
theropod
dinosaurs.
In
particular,
Saurosuchus
galilei
is
a
large
quadrupedal
prestosuchid
loricatan
found
in
Ischigualasto
Formation
from
northwestern
Argentina.
Here,
we
reevaluated
braincase
S
.
and
present
first
paleoneurological
study
based
on
partial
natural
casts
holotype
digital
cranial
endocast
referred
specimen
PVSJ
32.
The
was
here
reinterpreted,
identifying
sutures
supraoccipital,
otoccipital,
basioccipital,
parabasisphenoid,
prootic,
laterosphenoid.
A
unique
feature
identified
presence
deep
paracondylar
recesses
associated
with
pharyngotympanic
pneumaticity,
which
has
not
been
any
other
“rauisuchians”
so
far.
Most
structures
encephalon
were
recognized
including
nerves
V–XII,
olfactory
bulbs,
main
blood
vessels
sinuses,
inner
ear.
These
allowed
us
to
quantify
some
its
sensorial
capacities
recognize
had
an
enhanced
acuity,
coefficients
higher
than
those
expected
for
body
size,
condition
previously
observed
living
crocodilians
tyrannosaurid
An
improved
sense
smell
might
have
track
prey
long
distances
compensate
poorer
development
senses
like
vision
balance.
Язык: Английский
Osteology and phylogenetic relationships of a new archosauriform reptile from the Middle Triassic (Anisian) of GermanyCitation for this article: Sues, H-D., Spiekman, S. N. F., & Schoch, R. R. (2024) Osteology and phylogenetic relationships of a new archosauriform reptile from the Middle Triassic (Anisian) of Germany. Journal of Vertebrate Paleontology. https://doi.org/10.1080/02724634.2024.2357326
Journal of Vertebrate Paleontology,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 12, 2024
Skeletal
remains
of
archosauriform
reptiles
from
the
Lower
and
lower
Middle
Triassic
Buntsandstein
Group
in
Central
European
Basin
are
rare.
This
paper
reports
on
a
partial,
almost
completely
disarticulated
skeleton
previously
unknown
reptile
(Anisian)
Röt
Formation
Rotfelden
Baden-Württemberg
(Germany).
Marcianosuchus
angustifrons
gen.
et
sp.
nov.
is
distinguished
by
following
combination
features:
posterodorsal
process
premaxilla
slender,
slightly
inclined
posterodorsally,
with
rounded
apex;
surface
frontal
covered
diverging,
fine
longitudinal
grooves;
squamosal
distinct
lateral
ridge
extending
for
entire
length
element;
teeth
proportionately
small,
weakly
recurved
crowns;
humerus
considerably
shorter
than
femur;
distal
shaft
ischium
rod-like,
not
plate-like;
pubis
flat
portion
forming
'pubic
apron':
neural
spines
posterior
cervical
anterior
dorsal
vertebrae
transversely
greatly
expanded
apices
that
Y-shaped
or
view;
centra
taller
dorsoventrally
long
anteroposteriorly;
osteoderms
more
less
rectangular
outline,
longer
anteroposteriorly
wide
mediolaterally,
concave
margins
bearing
eminence;
surfaces
unsculptured
region
keel
eminence
sculpturing
radially
arranged
grooves
pits.
represents
first
definitive
record
non-archosaurian
Germany.
Its
body
plan
most
closely
resembles
Euparkeria
capensis
among
well-known
reptiles,
but
two
taxa
clearly
distinct.
Язык: Английский
Anatomy and ontogeny of the “carnivorous aetosaur”: New information on Coahomasuchus kahleorum (Archosauria: Pseudosuchia) from the Upper Triassic Dockum Group of Texas
The Anatomical Record,
Год журнала:
2024,
Номер
308(2), С. 671 - 735
Опубликована: Ноя. 18, 2024
Abstract
A
newly
referred
specimen
of
Coahomasuchus
kahleorum
(TMM
31100‐437)
from
the
lower
part
Upper
Triassic
Dockum
Group
Texas
preserves
much
skeleton
including
majority
skull.
Introduced
in
literature
1980s
as
“carnivorous
aetosaur”,
TMM
31100‐437
bears
recurved
teeth
that
previously
were
considered
unique
among
aetosaurs.
The
small
size
individual
led
to
speculation
it
represents
a
skeletally
immature
retains
plesiomorphic
dentition
for
Archosauromorpha.
We
provide
detailed
evaluation
anatomy
and
phylogenetic
relationships
this
specimen.
Apomorphies
osteoderms
braincase
support
referral
C.
.
Histological
analysis
femur
demonstrates
does
not
represent
juvenile
form
another
known
aetosaur.
Thus,
31000‐437
provides
case
demonstrating
aetosaur
species
spanned
wide
range
maximum
body
sizes,
approximately
1.5
m
over
5
length.
Reanalysis
type
,
along
with
information
31000‐437,
lateral
are
autapomorphic
described
have
distinct
medial
flanges
well
dorsal
eminence.
Overall,
key
details
regarding
diet
an
early
occurring
Язык: Английский