Waters Jeffrey L (19 results)

paperback. Condition: As New.

Hardcover. Condition: Collectible - Fine. Near Fine. First Edition. A crisp, clean copy. Inscribed by Waters on half title page. 312pp. Dust jacket now in a new mylar cover. Jacket has a crease to rear flap. Size: 8vo - 8" - 9" Tall. Inscribed and Signed.

Hardcover. Condition: Very Good. Near Fine. 1st Edition. Signed by Author(s). The book has light bumping to the corners.The dust jacket is unclipped ($19.99). Signed by the author on the half-title page. Michael Buchman, dj art (illustrator).

Hardcover. Condition: NF. Hardback in Near Fine condition with Near Fine dust jacket. . 8vo 8" - 9" tall. 312 pages. * Quick Shipping * All Books Mailed in Boxes * Free Tracking Provided *.

Hardcover. Condition: As New. Dust Jacket Condition: As New. First Edition. SIGNED BY AUTHOR! Minor shelf wear. Beautiful copy, like-new condition. Signed by Author(s). Book.

Condition: New.

Condition: As New. Unread book in perfect condition.

Paperback. Condition: New. The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. EAT describes homology upon the echinoderm bauplan, interpreted through early post-metamorphic growth and growth zones, dividing it into axial regions generally associated with elements of the ambulacral system and extraxial regions that are not. UEH describes the detailed construction of the axial skeleton, dividing it into homologous plates and plate series based on symmetry, early growth, and function. These hypotheses are not in conflict; the latter is rooted in refinement of the former. Some interpretive differences arise because many of the morphologies described from eleutherozoan development are difficult to reconcile with Paleozoic forms. Conversely, many elements described for Paleozoic taxa by UEH, such as the peristomial border plates, are absent in eleutherozoans. This Element recommends these two hypotheses be used together to generate a better understanding of homology across Echinodermata.…

ISBN 1-891761-11-0. Hardback. INSCRIBED by author. Very Good to Near Fine condition book in a Very Good to Near Fine condition dustjacket. Tight, bright, attractive copy with no markings to the book. No statement of later printing on copyright page.

Condition: New.

Condition: New.

Condition: New. 1st edition NO-PA16APR2015-KAP.

Paperback. Condition: Brand New. 75 pages. 9.00x6.00x0.11 inches. In Stock.

Condition: New. In English.

Condition: New.

Condition: New.

Condition: As New. Unread book in perfect condition.

paperback. Condition: New. In shrink wrap. Looks like an interesting title.

Paperback. Condition: New. The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. EAT describes homology upon the echinoderm bauplan, interpreted through early post-metamorphic growth and growth zones, dividing it into axial regions generally associated with elements of the ambulacral system and extraxial regions that are not. UEH describes the detailed construction of the axial skeleton, dividing it into homologous plates and plate series based on symmetry, early growth, and function. These hypotheses are not in conflict; the latter is rooted in refinement of the former. Some interpretive differences arise because many of the morphologies described from eleutherozoan development are difficult to reconcile with Paleozoic forms. Conversely, many elements described for Paleozoic taxa by UEH, such as the peristomial border plates, are absent in eleutherozoans. This Element recommends these two hypotheses be used together to generate a better understanding of homology across Echinodermata.…