Spatangoida

First record of the irregular sea urchin Lovenia cordiformis (Echinodermata: Spatangoida: Loveniidae) in Colombia.

Brissopsis elongata (Spatangoida: Brissidae): Todas las asociaciones entre las variables predictivas y las dimensiones de esta especie fueron significativas (Cuadro 1 y Cuadro 2), y los modelos que mejor explicaron los resultados obtenidos fueron la densidad intraespecifica y la latitud (Cuadro 2).

Duchene, "Burrowing behaviour and sediment reworking in the heart urchin Brissopsis lyrifera Forbes (Spatangoida)," Marine Biology, vol.

Spatangoida. II.Amphisternata II, Spatangidae, Loveniidae, Pericosmidae, Schizasteridae, Brissidae.

Spatangoida (II) - Amphisternata (II) - Spatangidae, Loveniidae, Pericosmidae, Schizasteridae, Brissidae.

As the figure indicates, bindin is present not only in the Echinoida and the Arbaeioida (from which it was previously known), but also in the sand dollars (Clypeasteroida) and the heart urchins (Spatangoida), as well as the phylogenetically much more distant Diadematoida and Cidaroida.

Here I show that pluteus larvae of a sea urchin, Brisaster latifrons (Order Spatangoida), are capable of feeding but do not require food to complete larval development.

jacobyi bear a striking resemblance to the characteristic larval form of irregular urchins in the order Spatangoida (Mortensen, 1921; Rees, 1953).

Two new heart-urchins, including a new species of Cyclaster, from New Zealand waters (Echinoidea: Spatangoida).

Oxygen gradients and microbiota in the gut of the irregular sea urchin Echinocardium cordatum (Spatangoida: Echinodermata).