-
Yukoniidae S. Zhang, 1980 [nom. transl. et emend. Jell, in
Whittington et al., 1997 ex
Yukoniinae S.
Zhang in W. Zhang, Lu et al., 1980] is a
small family...
-
monotypical family Tsunyidiscidae.
First the Calodiscidae.
Second the
Yukoniidae, who
sprouted the Eodiscidae. And
finally the Hebediscidae, that themselves...
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Superfamily Eodiscoidea Calodiscidae Eodiscidae Hebediscidae Tsunyidiscidae Weymouthiidae Yukoniidae Synonyms Isopygia Gürich, 1907
Miomera Jækel, 1909...
- (see box). The
Eodiscids probably descended from the
agnostids of
family Yukoniidae. Like
other agnostids, the body of
eodiscids is diminutive, the headshield...
-
approximately same size, with 3
thoracic segments in-between. For a
member of the
Yukoniidae family central raised area of the
cephalon or (glabella) is relatively...
-
contain Tannudiscus, the
probable ancestor of the Agnostina.
Second the
Yukoniidae, who
sprouted the Eodiscidae. And
finally the Calodiscidae. Whittington...
