Definition of Helicoplacoid. Meaning of Helicoplacoid. Synonyms of Helicoplacoid

Here you will find one or more explanations in English for the word Helicoplacoid. Also in the bottom left of the page several parts of wikipedia pages related to the word Helicoplacoid and, of course, Helicoplacoid synonyms and on the right images related to the word Helicoplacoid.

Definition of Helicoplacoid

No result for Helicoplacoid. Showing similar results...

Meaning of Helicoplacoid from wikipedia

- known taxa were discovered in sediments dating back to the Cambrian. Helicoplacoid skeletons consist of small platelets arranged like those of asteroids...
- other echinoderms) and Helicocystis (seen as bridging the triradial helicoplacoids and the pentaradial crown group). They cite research indicating that...
- J. (2000). "Evolutionary paleoecology of the earliest echinoderms: Helicoplacoids and the Cambrian substrate revolution". Geology. 28 (9): 839–842. Bibcode:2000Geo...
- Zamora et al., 2022 Not all of the echinoderms are edrioasteroids with some being Edrioasteroids, Blastozoa, Crinoids, Helicocystoid and Helicoplacoid)....
- including brachiopods, hyolithids, trilobites, archeocyathids, and helicoplacoids, which are often articulated. Non-mineralized components of these fossils...
- J. (2000). "Evolutionary paleoecology of the earliest echinoderms: Helicoplacoids and the Cambrian substrate revolution". Geology. 28 (9): 839–842. Bibcode:2000Geo...
- survive. Early sessile echinoderms were mostly "mat stickers". The helicoplacoids failed to adapt to the new conditions and died out; the edrioasteroids...