… In this paper, we describe the complete larval development of A. jacobyi, document unexpected
morphological traits in the late-stage larvae, and discuss how these unexpected traits …

… larval morphology in the evolution of benthic development by Patiriella exigua (Asteroidea:
Asterinidae). A comparison with the larvae of Patiriella species with planktonic development. …

… direct development without evidence of a pluteus larva, we found that the unusual development
… , reduced pluteus, with vestigial larval arms and a greatly reduced larval skeleton. This …

… Most echinoids, … that develop into planktonic, feeding larvae known as echinoplutei. In this
review, we describe the diversity of larval stages and the patterns of development in echinoids…

… development in echinoids has been published. An understanding of the modifications of
echinoid development … comparison with lecithotrophic development in other echinoderms, …

… development of the larval nervous system of E. tribuloides retains features shared with other
echinoderm larvae, … divergence of the two clades of echinoids about 265 million years ago. …

… The rules for recognition of feeding larval development among irregular echinoids have not
been established. It can be expected that rules will be constrained by variation in num bers …

… to be drawn from our previous knowledge of the Echinoid and Asteroid larvæ. Considering,
… , it seems to me that the facts known of the Echinoid and Asteroid larvæ outweigh those of the …

… echinoids in which larval form is easiest torecognize in fossils, nonplanktotrophic development
… ago), no echinoids show evidenceof nonplanktotrophic development. Furthermore, there …

… Late-stage echinoid and asteroid larvae showing the position of the developing rudiment.
See Lacalli (1993) for rearing and specimen preparation methods. Scale bars, 200 pm. …