The aim of this study was to quantify fecundity, brood loss, egg mortality, and reproductive output in the
phyletic giant Damithrax spinosissimus.
In articles such as "Is a New and General Theory of Evolution Emerging" (see above) and his book Wonderful Life (Norton, 1990), Gould argued that multiple levels of selection, the phenomenon of mass extinction, and early diversification of major
phyletic groups followed by culling, all undermined the heretofore simplistic and gradualistic standard Neo-Darwinian story.
The unusual condition of the ectopterygoid and endopterygoid of Leptophilypnion may well be uniquely derived or apomorphic characters, and thus unhelpful in determining its
phyletic relationships.
For example, warmly reviewing the "old-fashioned tone" of the Atheneum edition in New York's Saturday Review (on 23 August 1969), Roger Masters took exception to only one detail--that the sex-drive which cohered such primitive communities, owing to
phyletic memory, could manifest itself among the blades as homosexual.
The life cycle and
phyletic affinity of Gloeocapsomorpha prisca Zalessky 1917 from Ordovician rocks in the Canadian Williston Basin.
Polymorphisms and
phyletic relationships of the Paisa community from Antioquia (Colombia).
This gene complex, at least as a protein-coding set of amino acids, is conserved through a wide range of forms, underlying developmental modules that can be transposed across species and even
phyletic barriers and that might even be common to vertebrates and invertebrates.
C., 1989.--A new Sarcoglanidinae catfish, phylogeny of its subfamily, and an appraisal of the
phyletic status of the Trichomycterinae (Teleostei, Trichomycteridae).
"To explain this" - adds the lead author Pier [ETH]auro Ciachino, from Torino, Italy - "we must go back at least to the Late Oligocene (29-24 million years) where a continuum of land connected the Dinarides and Rhodopes mountains, allowing colonization by this
phyletic lineage.
For biology teachers, this may entail the uncertainty of finding accessible and relatively small areas in which substantial marine
phyletic biodiversity can be found.