Zoological Journal of the Linnean Society,
Journal Year:
2024,
Volume and Issue:
203(1)
Published: Dec. 28, 2024
Abstract
The
extinct
scorpion
family
Chaerilobuthidae
Lourenço
and
Beigel,
2011,
endemic
to
Burmese
amber,
was
initially
established
due
its
unique
pedipalp
trichobothrial
pattern
related
the
Type
A
B
patterns
of
families
Buthidae
C.L.
Koch,
1837
Chaerilidae
Pocock,
1893,
respectively.
present
contribution
describes
11
new
specimens,
representing
seven
species
from
Mid-Cretaceous
revealing
their
morphology
using
various
imaging
technologies.
revised
diagnosis
Chaerilobuthus
2011
is
provided
based
on
morphological
characters
carapace,
ocelli,
chelicera,
trichobothria,
coxapophyses,
leg
tarsi.
other
two
genera
Chaerilobuthidae,
Chaeriloiurus
Lourenço,
2020
Serratochaerilobuthus
2024,
are
synonymized
with
a
reassessment
morphometric
analysis,
creating
brigittemuellerae
(Lourenço
Velten,
2020),
comb.
nov.
schmidti
2024),
nov..
systematic
position
clarified
phylogenetic
analyses
an
updated
character
matrix
for
Pseudochactidae
Gromov,
1998,
extant
in
Asia.
Phylogenetic
analysis
placed
sister
pseudochactid
subfamily
Vietbocapinae
2012,
justifying
transfer
Pseudochactidae,
as
Chaerilobuthinae
stat.
This
discovery
confirms
that
date
back
100
Mya
contributes
understanding
origin
evolutionary
history
this
relictual
family.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 7, 2025
The
click
beetles
(Elateridae)
represent
the
major
and
well-known
group
of
polyphagan
superfamily
Elateroidea.
Despite
a
relatively
rich
fossil
record
Mesozoic
Elateridae,
only
few
species
are
described
from
Upper
Cretaceous
Burmese
amber.
Although
Elateridae
spend
most
their
lives
as
larvae,
our
knowledge
on
immature
stages
this
family
is
limited,
which
especially
valid
for
fossils.
So
far,
single
larval
beetle
has
been
reported
Here,
we
describe
two
specimens
same
deposit
based
morphology
unambiguously
belong
to
predominantly
Southern
Hemisphere
subfamily
Pityobiinae,
being
similar
representatives
tribe
Tibionemini.
However,
since
larvae
closely
related
bioluminescent
Campyloxenini
have
not
yet
described,
place
Tibionemini
tentatively.
One
Pityobiinae
was
recently
amber
adults,
discuss
if
it
can
be
congeneric
with
here-reported
larvae.
Recent
+
clade
known
South
America
New
Zealand,
hypothesized
Gondwanan
origin.
Hence,
newly
discovered
may
further
contribute
highly
debated
hypothesis
that
biota
resin-producing
forest
Burma
Terrane,
probably
an
island
drifting
northward
at
time
deposition,
had
least
partly
affinities.
discovery
enigmatic
in
sheds
light
palaeodiversity
distribution
species-poor
beetles,
contain
recent
lineage,
well
taxonomic
composition
extinct
ecosystem.
Systematic Biology,
Journal Year:
2024,
Volume and Issue:
73(3), P. 495 - 505
Published: May 1, 2024
Abstract
Asymmetrical
rates
of
cladogenesis
and
extinction
abound
in
the
tree
life,
resulting
numerous
minute
clades
that
are
dwarfed
by
larger
sister
groups.
Such
taxa
commonly
regarded
as
phylogenetic
relicts
or
“living
fossils”
when
they
exhibit
an
ancient
first
appearance
fossil
record
prolonged
external
morphological
stasis,
particularly
comparison
to
their
more
diversified
Due
special
status,
various
tend
be
well-studied
prioritized
for
conservation.
A
notable
exception
this
trend
is
found
within
Amblypygi
(“whip
spiders”),
a
visually
striking
order
functionally
hexapodous
arachnids
antenniform
walking
leg
pair
(the
eponymous
“whips”).
Paleoamblypygi,
putative
group
remaining
Amblypygi,
known
from
Late
Carboniferous
Eocene
deposits
but
survived
single
living
species,
Paracharon
caecusHansen
(1921),
was
last
collected
1899.
absence
genomic
sequence-grade
tissue
vital
taxon,
there
no
global
molecular
phylogeny
date,
nor
fossil-calibrated
estimation
divergences
group.
Here,
we
report
previously
unknown
species
Paleoamblypygi
cave
site
Colombia.
Capitalizing
upon
discovery,
generated
integrating
ultraconserved
element
sequencing
with
legacy
Sanger
datasets
including
described
extant
genera.
To
quantify
impact
sampling
on
divergence
time
estimation,
performed
silico
experiments
pruning
Paracharon.
We
demonstrate
omission
has
significant
accuracy
node
dating
approaches
outweighs
excluding
ingroup
fossils,
which
bears
ancestral
range
reconstruction
Our
results
underscore
imperative
biodiversity
discovery
efforts
elucidating
relationships
“dark
taxa,”
especially
tropical
subtropical
habitats.
The
lack
reciprocal
monophyly
Charontidae
Charinidae
leads
us
subsume
them
into
one
family,
Charontidae,
new
synonymy.
PeerJ,
Journal Year:
2024,
Volume and Issue:
12, P. e17515 - e17515
Published: June 26, 2024
Burmese
amber
preserves
a
diverse
assemblage
of
Cretaceous
arachnids,
and
among
pseudoscorpions
(Arachnida:
Pseudoscorpiones),
ten
species
in
five
families
have
already
been
named.
Here,
we
describe
new
fossil
from
the
pseudoscorpion
family
Hyidae,
providing
detailed
measurements,
photographs
3D-models
synchrotron
scanning.
Based
on
morphology,
fossil,
Hya
fynni
sp.
nov.
is
placed
genus
,
nearly
identical
to
extant
genus,
except
for
position
trichobothrium
est
pedipalpal
chela,
thereby
indicating
extreme
morphological
stasis
this
invertebrate
lineage
over
last
99
million
years.
represents
first
described
third
superfamily
Neobisioidea.
It
also
joins
garypinid,
Amblyolpium
burmiticum
representing
oldest
records
genera.
Considering
proposed
divergence
dates,
newly
bolsters
Gondwanan
origin
provides
evidence
“
Late
Jurassic
Rifting
”
hypothesis
Burma
Terrane,
which
landmass
rifted
Gondwana
collided
with
Eurasia
by
Cretaceous/Eocene.
Like
today,
H.
likely
inhabited
humicolous
microhabitats
tropical
forests
supporting
ecological
niche
since
Mesozoic.
Zoological Journal of the Linnean Society,
Journal Year:
2024,
Volume and Issue:
202(2)
Published: Oct. 1, 2024
Abstract
The
Palpimanidae
are
one
of
five
extant
Palpimanoidea
families
that
occur
mainly
in
South
America
and
Africa,
although
there
lineages
Madagascar,
islands
the
Indian
Ocean,
parts
Asia.
Here
we
examine
role
plate
tectonics
shaping
distribution
Palpimanidae.
We
perform
molecular
sequencing
via
target
enrichment,
which
makes
use
fragmented
DNA,
because
most
specimens
stored
natural
history
museum
collections
were
not
properly
preserved
for
sequencing.
phylogenetic
analysis,
divergence
dating,
ancestral
range
reconstructions
to
assess
whether
continental
vicariance
shaped
evolution
also
eye
loss
character
reconstruction.
report
first
phylogeny
based
on
genomic
data
samples
majority
Chediminae
genera.
Results
suggest
originated
Triassic,
with
diversification
spanning
Jurassic
Cretaceous.
Vicarance
played
a
early
diversification,
later
expansion
out
Africa.
Based
morphology
Sceliraptor
is
synonymized
Sarascelis,
Sceliscelis
Scelidocteus,
new
genus
species
Sitamacho
tao
gen.
nov.,
sp.
nov.
described,
three
transferred
from
Hybosida.
Journal of Systematics and Evolution,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 17, 2024
Abstract
Five
new
spider
fossils
of
the
family
Macrothelidae
(Araneae:
Mygalomorphae)
are
described
from
mid‐Cretaceous
Kachin
amber,
Myanmar.
A
genus
Acanthomacrothele
gen.
nov.
is
established
for
three
species:
pauciverrucae
sp.
nov.,
geminata
and
longicaudata
Both
male
female
specimens
A.
described,
representing
a
rare
case
fossil
with
both
sexes
known.
We
also
describe
an
unidentified
juvenile
to
document
different
developmental
stages
Cretaceous
species.
To
test
phylogenetic
position
fossils,
we
undertook
analyses
using
topology‐unconstrained
topology‐constrained
methods.
Our
supported
placement
in
Macrothelidae,
although
its
relationship
other
genera
differed
among
analytical
The
documented
here
have
elongated,
widely
spaced
posterior
lateral
spinnerets,
compact
rectangular
group
eyes
on
tubercle,
more
spines
tibia
anterior
legs
than
female,
similar
extant
macrothelids,
suggesting
that
they
probably
retreat
construction
behavior,
habitat
preference,
mating
their
living
relatives.
