Last Updated
：2025/12/07
zombie taxon
Noun
(paleontology)
A
taxon
that
falsely
appears
to
persist
until,
or
reappear
at,
a
time
in
the
fossil
record
later
than
the
taxon's
actual
point
of
extinction,
due
to
fossils
of
organisms
belonging
to
the
taxon
having
been
eroded
from
their
original
strata
and
redeposited
in
the
source
sediments
for
younger
strata.
Japanese Meaning
ゾンビ分類群：実際には絶滅しているにもかかわらず、化石記録上であたかも絶滅後も存続・再出現しているように見える分類群。これは、分類群に属する生物の化石が本来の地層から侵食され、若い地層の堆積物に再堆積された結果、そうした錯覚が生じる現象を指す。 / （古生物学）絶滅時点と実際の化石出現時期がずれる現象によって、実際は絶滅している分類群が、若い地層において誤って存在しているかのように見えるケース。
Sense（1）
(paleontology)
A
taxon
that
falsely
appears
to
persist
until,
or
reappear
at,
a
time
in
the
fossil
record
later
than
the
taxon's
actual
point
of
extinction,
due
to
fossils
of
organisms
belonging
to
the
taxon
having
been
eroded
from
their
original
strata
and
redeposited
in
the
source
sediments
for
younger
strata.
（ plural ）
Quizzes for review
(paleontology) A taxon that falsely appears to persist until, or reappear at, a time in the fossil record later than the taxon's actual point of extinction, due to fossils of organisms belonging to the taxon having been eroded from their original strata and redeposited in the source sediments for younger strata.
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zombie taxon
Careful stratigraphic analysis revealed that the supposed late-surviving species was actually a zombie taxon, with its fossils having been reworked into younger sediment.
See correct answer
Careful stratigraphic analysis revealed that the supposed late-surviving species was actually a zombie taxon, with its fossils having been reworked into younger sediment.
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