- stars),
Somasteroidea (early
asterozoans from
which the
other classes most
likely evolved), and
Stenuroidea (early
asterozoans with
unclear relationships...
- A red **** sea star,
Protoreaster linckii is an
example of an
asterozoan echinoderm....
-
Myxozoans Chordates Lancelets Tunicates Vertebrates Echinoderms Sea
lilies Asterozoans inc.
starfish Echinozoans inc. sea
urchins Hemichordates Acorn worms...
-
first appeared in the
fossil record in the Cambrian. The
first known asterozoans were the Somasteroidea,
which exhibit characteristics of both groups...
- doi:10.1080/00222930008678384. Spencer, W. K.; Wright, C. W. (1966). "
Asterozoans". In Moore;
Raymond C. (eds.).
Treatise on
Invertebrate Paleontology...
- granifer,
reproduces a****ually by parthenogenesis. In
certain other asterozoans,
adults reproduce a****ually
until they mature, then
reproduce ****ually...
- 115–199. Fraga,
Malton Carvalho; Vega,
Cristina Silveira (2020-01-01). "
Asterozoans from the
Devonian of the Paraná Basin,
South Brazil".
Journal of South...
- sea
urchins at
least to the
Middle Devonian.
Blake (2024)
reviews the
asterozoan class Stenuroidea, and
names new
families Hystrigasteridae, Stuertzasteridae...
-
described in 2021.
Villebrunaster represents one of the
oldest members of
asterozoans, and perhaps,
according to a
description in 2021, the
earliest divergent...
- The Somasteroidea, or Stomasteroidea, is an
extinct order of
asterozoan echinoderms first defined in 1951 by W. K. Spencer.
Their first appearance in the...
