annelidan

How To Use annelidan In A Sentence

• Vertebrates and yet show no particular annelidan affinities? Form and Function A Contribution to the History of Animal Morphology
• The annelidan affinities of the Echiura are further strengthened by recent work demonstrating a metameric or segmented arrangement of their nervous system as is typical of the annelids.
• One widely-mooted suggestion is that planktotrophic larvae, typified by the annelidan trochophore and echinoid pluteus, existed long before the metazoan radiations evident in the Cambrian fossil record.
• The high degree of diversity of the annelidan nervous system may seem to weaken the power of the ropeladder-like nervous system to act as an apomorphic characteristic for a taxon comprising Annelida and Arthropoda.
• At first glance, the animals in the annelidan and molluskan groups look like they have little in common.
• One widely-mooted suggestion is that planktotrophic larvae, typified by the annelidan trochophore and echinoid pluteus, existed long before the metazoan radiations evident in the Cambrian fossil record.
• As a rule, annelidan segments are generated from a posterior growth zone, arising and developing sequentially, from anterior to posterior.
• Cell lineage analyses, mainly conducted on annelidan. and molluscan embryos, suggested that the ultimate fates of blastomeres are tremendously conserved.