Fossil echinoderms, including the common Cambrian and Ordovician echinoderms figured here (Fig. 1 from Deline, et al., 2021; request permission to use here) have a rich and diverse fossil record ...

Echinoderms such as starfish are unusual for their five-fold body symmetry. Maps of gene-expression patterns show how this body plan was acquired, and that the genes specifying head structures do ...

The evolution of the sea star, sea urchin, and other echinoderms’ body shape during the Cambrian and Ordovician periods was faster and more dramatic than their ecological innovation, according ...

Keywords echinoderms, sea stars, sea urchins, sand dollars, radial symmetry, spiny skin, water vascular system, locomotion, feeding habits, regeneration, reproduction, scientific research Email us ...

Therefore, their systematic positions have been represented by two hypotheses (H): as stem taxa to echinoderms (H1) or as stem taxa to chordates (H2). These conclusions rest on previous inability to ...

Attached echinoderms, such as crinoids and edrioasteroids, are much more common on hard substrates in the shallow-water Fillmore, whereas vagile forms, such as rhombiferans and mitrate stylophorans, ...

Like sea stars, ancient echinoderms nibbled with tiny tube feet Rare 430-million-year-old fossils preserve signs of these tentacle-like limbs ...

Mollusks get both larger and smaller than all the Echinoderms and they are more diverse both in terms of number of species and the ecological niches they fill. If you don’t believe me that Mollusks ...

Introduction to the Paleontological Society short course 'Geobiology of echinoderms' / N. Gary Lane -- Living comatulids / Charles G. Messing -- Implications of research on living stalked crinoids for ...

The recent Invertebrate Wars reminded me of spectacular, but often ignored, group of gastropods. The parasites! This is a group that I have totally geeked out on in the past. In my previous work I ...

Global contribution of echinoderms to the marine carbon cycle: a re-assessment of the oceanic CaCO3 budget and the benthic compartments. Ecological Monographs, 2009; 091222124538045 DOI: 10.1890 ...