- Fedonkin that all of the
organisms formed one
phylum (originally class) of
triradially symmetrical enigmatic organisms from the Ediacaran. The
eventual split...
- as oral cone. The oral cone was
composed of
several plates organized triradially.
Three of the
plates were
quite large.
Three to four
medium sized plates...
-
sister to all
other echinoderms) and
Helicocystis (seen as
bridging the
triradial helicoplacoids and the
pentaradial crown group). They cite
research indicating...
- Y.; Tang, F.; Vickers-Rich, P.; Li, M.; Chen, A. (2024). "A ****tive
triradial macrofossil from the
Ediacaran Jiangchuan Biota". iScience. 27 (2): 108823...
- and is also
found in the Nemakit-Daldynian. The
fossils represent the
triradially symmetrical mineralised tube in
which the
organism dwelt; it was sedentary...
-
family Amplectobeluidae (e.g. Amplectobelua, Lyrarapax) by the
presence of
triradial oral cone and non-hypertrophied
first distal endite.
Compared to Hurdiidae...
-
Amangeldi District of
Kostanay Region,
northern Kazakhstan. The Tur****
triradial swastika, one of a
number of
Neolithic earth constructions known to archaeologists...
- the
Ediacaran period from 549 to 542
million years ago, as well as the
triradially symmetrical mineralized tubes of
anabaritids (e.g. Anabarites, Cambrotubulus)...
- studies). 3 or 4
tooth plates might be enlarged,
giving the oral cone a
triradial (e.g. Anomalocaris, Echidnacaris) or
tetraradial (e.g. Hurdiidae, Lyrarapax)...
-
reproductive organ containing the carpel,
style and stigma. Three-fold
triradial symmetry was
present in
Trilobozoa from the Late
Ediacaran period. Four-fold...
