RAH_20Lec_208_20__20_20Echinoderms - Hough Lecture Outline...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Hough Lecture Outline - Echinoderms 1 DEUTEROSTOME BRANCH of the Coelomates Deuterostomes (review of embryology) mouth second opening radial early cleavage indeterminate development (later fixation of cell fates) enterocoelous – coelom forms from invagination of early mesoderm with cell migrations INTERMEDIATE PHYLA: Invertebrate coelomate phyla with partial but incomplete expression of deuterostome characteristics: some with radial cleavage, some with mouth as 2 nd opening, some enterocoelous, but none with all three characters The “Lobophorate” Group lobophore – a U-shaped ridge around the mouth with ciliated tentacles Phylum PHORONIDA – phoronids (all marine) tube-dwellers similar to some polycheate worms Phylum ECTOPROCTA – bryozoans (marine and freshwater) colonial units resembling bryophyte plants Phylum BRACHIOPODA – brachiopods (all marine) resemble bivalve mollusks
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Hough Lecture Outline - Echinoderms 2 FULLY DEUTEROSTOME PHYLA:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/03/2010 for the course BIO 1500 taught by Professor Pandolfi during the Winter '08 term at Wayne State University.

Page1 / 4

RAH_20Lec_208_20__20_20Echinoderms - Hough Lecture Outline...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online