Bone histology of Smilodon populator and Puma concolor from the Pleistocene of equatorial Brazil with comments on fossil diagenesis
Quaternary International,
Journal Year:
2025,
Volume and Issue:
727, P. 109741 - 109741
Published: March 31, 2025
Language: Английский
New information on paleopathologies in non-avian theropod dinosaurs: a case study on South American abelisaurids
BMC Ecology and Evolution,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: Jan. 31, 2024
Studies
on
pathological
fossil
bones
have
allowed
improving
the
knowledge
of
physiology
and
ecology,
consequently
life
history
extinct
organisms.
Among
vertebrates,
non-avian
dinosaurs
drawn
attention
in
terms
evidence,
since
a
wide
array
fossilized
lesions
diseases
were
noticed
these
ancient
Here,
we
evaluate
conditions
observed
individuals
different
brachyrostran
(Theropoda,
Abelisauridae)
taxa,
including
Aucasaurus
garridoi,
Elemgasem
nubilus,
Quilmesaurus
curriei.
For
this,
use
multiple
methodological
approaches
such
as
histology
computed
tomography,
addition
to
macroscopic
evaluation.
The
holotype
shows
several
pathognomonic
traits
failure
vertebral
segmentation
during
development,
causing
presence
two
fused
caudal
vertebrae.
occurrence
this
condition
is
first
case
be
documented
so
far
non-tetanuran
theropods.
Regarding
Elemgasem,
vertebrae
an
intervertebral
space
between
centra,
thus
fusion
limited
distal
rim
articular
surfaces.
This
pathology
here
considered
spondyloarthropathy,
evidence
for
theropod.
microstructural
arrangement
right
tibia
marked
variation
portion
outer
cortex,
probably
due
radial
fibrolamellar
bone
tissue.
Although
similar
tissue
present
other
vertebrates
cause
its
formation
still
debated,
it
could
response
some
kind
pathology.
theropods,
traumatic
injuries
are
better
represented
than
maladies
(e.g.,
infection,
congenital
or
metabolic
diseases,
etc.).
These
pathologies
recovered
mainly
among
large-sized
theropods
Abelisauridae,
Allosauridae,
Carcharodontosauridae,
Tyrannosauridae,
distributed
principally
axial
elements.
Statistical
tests
distribution
theropod
clades
show
strong
association
taxa-pathologies,
body
regions-pathologies,
taxa-body
regions,
suggesting
styles
behaviours
may
underlie
frequency
taxa.
Language: Английский
Histological analysis and etiology of a pathological iguanodontian femur from England
Journal of Anatomy,
Journal Year:
2024,
Volume and Issue:
245(3), P. 490 - 500
Published: May 10, 2024
Derived
ornithopods,
such
as
hadrosaurids,
show
a
high
occurrence
of
fossilized
lesions
and
diseases.
However,
paleopathologies
in
iguanodontians
seem
to
be
less
common,
considering
the
rich
fossil
record
these
taxa
Europe,
particular
Belgium,
Britain
Spain.
Here,
we
describe
an
iguanodontian
femur
discovered
England
that
exhibits
large
overgrowth
its
lateral
aspect,
not
previously
recognized
any
other
similar
remains.
The
specimen
was
scanned
with
micro-computed
tomography
(microCT)
later
sectioned
three
sites
for
histological
analysis.
belongs
early
adult
Iguanodontia
indet.,
based
on
presence
woven
parallel
fibered
complex
outer
cortex
four
lines
arrested
growth.
Internal
analysis
dome-like
suggests
it
can
diagnosed
fracture
callus.
injury
might
have
negatively
impacted
upon
animal's
locomotion
trauma
had
occurred
region
above
knee,
crucial
spot
hindlimb
musculature.
Finally,
cancellous
medullary
bone-like
tissue
cavity
next
pathological
overgrowth.
An
attempt
made
determine
precise
nature
this
tissue,
bone
is
linked
ovulation
period
(avian)
dinosaurs,
whereas
types
endosteal,
been
bones.
Language: Английский
Chronic fracture and osteomyelitis in a large‐bodied ornithomimosaur with implications for the identification of unusual endosteal bone in the fossil record
The Anatomical Record,
Journal Year:
2022,
Volume and Issue:
306(7), P. 1864 - 1879
Published: Oct. 4, 2022
Abstract
Paleopathological
diagnoses
provide
key
information
on
the
macroevolutionary
origin
of
disease
as
well
behavioral
and
physiological
inferences
that
are
inaccessible
via
direct
observation
extinct
organisms.
Here
we
describe
external
gross
morphology
internal
architecture
a
pathologic
right
second
metatarsal
(MMNS
VP‐6332)
large‐bodied
ornithomimid
(~432
kg)
from
Santonian
(Upper
Cretaceous)
Eutaw
Formation
in
Mississippi,
using
combination
X‐ray
computed
microtomography
(microCT)
petrographic
histological
analyses.
microCT
imaging
histopathologic
features
consistent
with
multiple
complete,
oblique
to
comminuted,
minimally
displaced
mid‐diaphyseal
cortical
fractures
produce
“butterfly”
fragment
fracture
pattern,
secondary
osteomyelitis
bone
fistula
formation.
We
interpret
this
evidence
blunt
force
trauma
foot
could
have
resulted
intra‐
or
interspecific
competition
predator–prey
interaction,
probably
impaired
function
weight‐bearing
element
until
animal's
death.
Of
particular
interest
is
apparent
decoupling
endosteal
periosteal
pathological
deposition
MMNS
VP‐6332,
which
produces
transverse
sections
exhibiting
homogenously
thick
absence
localized
reactive
bone.
These
distribution
depositional
patterns
used
criteria
for
ruling
out
favor
reproductive
one
unusual
fossil
specimens.
On
basis
suggest
caution
their
use
substantiate
medullary
identification
archosaurians.
Language: Английский
An insight into cancer palaeobiology: does the Mesozoic neoplasm support tissue organization field theory of tumorigenesis?
BMC Ecology and Evolution,
Journal Year:
2022,
Volume and Issue:
22(1)
Published: Dec. 13, 2022
Abstract
Background
Neoplasms
are
common
across
the
animal
kingdom
and
seem
to
be
a
feature
plesiomorphic
for
metazoans,
related
with
an
increase
in
somatic
complexity.
The
fossil
record
of
cancer
complements
our
knowledge
origin
neoplasms
vulnerability
various
vertebrate
taxa.
Here,
we
document
first
undoubted
primary
malignant
bone
tumour
Mesozoic
non-amniote.
diagnosed
osteosarcoma
developed
vertebral
intercentrum
temnospondyl
amphibian,
Metoposaurus
krasiejowensis
from
Krasiejów
locality,
southern
Poland.
Results
A
wide
array
data
collected
gross
anatomy,
histology,
microstructure
affected
reveals
growth
dynamics
pathophysiological
aspects
neoplasm
formation
on
histological
level.
pathological
process
almost
exclusively
pertains
periosteal
part
composed
highly
vascularised
tissue
lamellar
matrix.
unorganised
arrangement
osteocyte
lacunae
observed
is
characteristic
types
connected
static
osteogenesis,
not
bone.
neoplastic
mimics
structural
level
fast
growing
fibrolamellar
bone,
but
develops
through
novel
ossification
type.
physiological
remodelling
inside
endochondral
domain
continued
uninterrupted
pathology
part.
Conclusions
Based
results,
discuss
case
study’s
consistence
Tissue
Organization
Field
Theory
tumorigenesis,
which
locates
causes
transformations
disorders
architecture.
Language: Английский
An insight into cancer palaeobiology: Does the Mesozoic neoplasm support Tissue Organization Field Theory of tumorigenesis?
Research Square (Research Square),
Journal Year:
2022,
Volume and Issue:
unknown
Published: Sept. 15, 2022
Abstract
Neoplasms
are
common
across
the
animal
kingdom
and
seem
to
be
a
feature
plesiomorphic
for
metazoans,
related
with
an
increase
in
somatic
complexity.
The
fossil
record
of
cancer
complements
our
knowledge
origin
neoplasms
vulnerability
various
vertebrate
taxa.
Here,
we
document
first
undoubted
primary
malignant
bone
tumour
Mesozoic
non-amniote.
diagnosed
osteosarcoma
developed
vertebral
intercentrum
temnospondyl
amphibian,
Metoposaurus
krasiejowensis
from
Krasiejów
locality,
southern
Poland.
A
wide
array
data
collected
gross
anatomy
microstructure
affected
reveals
growth
dynamics
pathophysiological
aspects
neoplasm
formation
on
histological
level.
neoplastic
mimics
structural
level
fast
growing
fibrolamellar
bone,
but
develops
through
novel
ossification
type.
physiological
process
remodelling
inside
endochondral
domain
continued
uninterrupted
pathology
periosteal
part.
Based
results,
discuss
case
study’s
consistence
Tissue
Organization
Field
Theory
tumorigenesis,
which
locates
causes
transformations
disorders
tissue
architecture.
Language: Английский
Evolution of Hadrosaurs in the Campanian of Laramidia: New Information from the Skull Roof and Braincase
Published: Jan. 1, 2022
This
project
seeks
to
investigate
the
morphology,
ontogeny,
and
evolution
of
skull
roof
braincase
characters
in
hadrosaurids
from
Campanian
northern
Laramidia
(Alberta
Montana),
a
setting
which
they
have
been
historically
recognized
as
having
high
abundance
diversity.
New
material
is
evaluated
clarify
distribution
informativeness
morphological
character
states,
allow
further
testing
previous
hypotheses
about
how
ontogenetic
development
these
evolved
within
clades,
enable
identification
previously
unrecorded
taxa.
Five
partial
skulls
Maiasaura
peeblesorum
are
described
bone
bed
Two
Medicine
Formation
Montana,
providing
basis
for
description
morphology
this
taxon,
an
series
allowing
crest
be
compared
related
new
middle
unit
Oldman
at
Milk
River
Ridge
Reservoir
near
Warner,
southern
Alberta
both
represent
first
occurrences
taxon
that
unit.
The
diagnostic
occurrence
Canada.
Brachylophosaurus
example
co-occurring
brachylophosaurins.
second
Parasaurolophini,
oldest
lambeosaurine
Alberta.
A
phylogenetic
analysis
using
maximum
parsimony
Bayesian
methods
supports
identifications,
also
re-identifies
specimen
Dinosaur
Park
geologically
youngest
brachylophosaurin
Language: Английский