-
Cephalaspidida is an
extinct order of
jawless fish in the
subclass Cornuata. Undichna, a fish-fin, or fish-swimming
fossil trail left as a
fossil impression...
- two
major groups, the more
primitive heterostracans and the
cephalaspids. The
cephalaspids were more
advanced than the
heterostracans in that they had...
-
classification of lampreys,
because lampreys were once
thought to be
related to
cephalaspids. If
lampreys are included, they
would extend the
known range of the group...
-
Undichna were made by
cephalaspids, that only had
presumptive motion scenarios, due to the
physiological form of the
cephalaspids as
predating the teleosts...
-
classification of lampreys, as
lampreys are
sometimes thought to be
related to
cephalaspids. If
lampreys are included, they
would extend the
known range of the group...
- 1994.
Jonathan M.
Adrain & Mark V. H.
Wilson (1994). "Early
Devonian cephalaspids (Vertebrata: Osteostraci: Cornuata) from the
southern Mackenzie Mountains...
-
existed in two
major groups, the more
primitive heterostracans and the
cephalaspids. Later,
about 420
million years ago, the
jawed fish
evolved from one...
- Søsterøyene.
Ringerike sandstone is
found in some
parts of Jeløya, and
fossil cephalaspids have been found. The
largest Norwegian moraine from the Ice Age crosses...
- of the Cephalaspidomorphi.
Fossil evidence now
suggests lampreys and
cephalaspids acquired their shared characters by
convergent evolution. The 5th edition...
-
Uppsala University.
cephalaspidomorphi at users.atw.hu/fishindex On the
cephalaspid fauna of the
Podolian plateau. PP
Balabai -
aukovi zapysky Naukovo-pryodo-znavcogomuzeâ...
