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What is a deuterostome animal?
What are the 3 deuterostome phyla?
Are deuterostomes a phylogeny?
How do deuterostomes differ from protostomes?
Deuterostomia, (Greek: “second mouth”), group of animals—including those of the phyla Echinodermata (e.g., starfish, sea urchins), Chordata (e.g., sea squirts, lancelets, and vertebrates), Chaetognatha (e.g., arrowworms), and Brachiopoda (e.g., lamp shells)—classified together on the basis of embryological development and by molecular ...
- Enterocoelomate
enterocoelomate, any animal in which the mesoderm-lined body...
- Protostomia
Protostomia, group of animals—including the arthropods...
- Enterocoelomate
Apr 22, 2015 · One of the key questions about chordate origins remains the evolution of the dorsal hollow nerve cord from the nervous system of a less centralized ancestor with little or no capacity for...
- Christopher J. Lowe, D. Nathaniel Clarke, Daniel M. Medeiros, Daniel S. Rokhsar, John Gerhart
- 2015
5 days ago · Quick Reference. An animal in which the opening (blastopore) of the embryonic cavity (see archenteron) becomes the anus and the mouth forms as a secondary orifice. The name derives from Greek, meaning literally ‘second mouth’.
Jul 27, 2005 · Deuterostomes are traditionally distinguished from other bilaterian animals (i.e., protostomes) by a number of developmental features, including initial cleavage planes, the fate of the blastopore, and the origin of the mesoderm during embryogenesis.
- Jaime E. Blair, S. Blair Hedges
- 2005
Nov 18, 2015 · Acorn worms, also known as enteropneust (literally, ‘gut-breathing’) hemichordates, are marine invertebrates that share features with echinoderms and chordates. Together, these three phyla comprise...
The deuterostomes, of which echinoderms, hemichordates, tunicates, and all higher chordates are the major extant groups, constitute a separate branch of the animal kingdom. 1,2 During the early Precambrian period, these animals split into two main groups: protostomes and deuterostomes.
