Now showing items 21-30 of 84
Fishes of the Mio-Pliocene Western Snake River Plain and Vicinity.
(2017-05-25)
We studied Rhinicthys osculus and its close relatives to discover evolutionary processes that operated to produce this widespread, polytypic fish group in an intermountain landscape of hundreds of small, isolated drainages. ...
Species diversity and phylogenetic systematics of American knifefishes (Gymnotiformes, Teleostei).
(University of Michigan Museum of Zoology, 2001)
A new species of land snail (Stylommatophora: Partulidae) from Raiatea, French Polynesia, Oceania.
(2007-11)
A newly discovered land snail species, Partula meyeri n. sp.,
of the highly threatened South Pacific pulmonate gastropod family Partulidae,
is described for Raiatea, one of the Society Islands, French Polynesia. This
species ...
Fourier shape analysis and fuzzy measure shape group differentiation of Great Lakes Asterionella Hassall (Heterokontophyta, Bacillariophyceae)
(2001)
Species separation of character-poor Asterionella, an abundant Great Lakes diatom, is difficult to accomplish by visual inspection alone. Diatom shape is an inherited property which is measurable. Quantifiable variation ...
The Natural History of Ants of Michigan's E. S. George Reserve: A 26 Year Study
(2012-11-01)
The results of a 26-summer study of the ants on an 1146 acre (464 ha) natural history reserve in southeastern Michigan are presented. Habitat distribution and nest construction for each of the 87 species are recorded. The ...
DNA FROM FECES AND MUSEUM SPECIMENS CONFIRMS A FIRST STATE RECORD BIRD
(2013-05-30)
ABSTRACT.— In October 2005, a vagrant kingbird (Aves: Tyrannus sp.) appeared in Michigan’s Upper Peninsula, nearly 2000 km from the northern limit of its usual range. Using mitochondrial DNA obtained from a fecal sample ...
Asterionella Hassall (Heterokontophyta, Bacillariophyceae) Taxonomic history and quantitative methods as an aid to valve shape differentiation
(2001)
The taxonomic history of the diatom genus Asterionella is sketchy at best. At present, delimitation of the genus, and species within it, are unclear. This is presented in a compilation of the taxonomy of Asterionella. In ...
Quantitative shape analysis as a diagnostic and prescriptive tool in determining Fragilariforma (Bacillariophyta) taxon status
(2009)
For 120 specimens and figures of Fragilariforma, 10 Legendre coefficients were calculated as
shape descriptors. For each half valve apically bisected, 50 x,y coordinates were used to calculate Legendre
coeffi cients. ...
Multivariate complexity analysis of 3D surface form and function of centric diatoms at the Eocene–Oligocene transition
(2016-01-01)
Complexity is important in the course of evolution, but consensus of what complexity analysis entails is elusive.
In this study, multivariate complexity is measured and analyzed in terms of magnitude of change and the ...
An annotated list of the name-bearing types of species-group names in Odonata preserved in the University of Michigan Museum of Zoology
(University of Michigan Museum of Zoology, 2003)