...There are relatively few clear-cut morphological differences among thefourteen species now assigned to Syrrhophus... 
John D. Lynch 「A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope」
...Our small samples of birds and reptiles from the island show nodetectable morphological differentiation from adjacent populations...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...Histoblast: the morphological unit or cellcharacteristic of a particular tissue...
John. B. Smith 「Explanation of Terms Used in Entomology」
...stylifer, the turkey louse) is of greatinterest from a morphological and developmental point of view, as theantennæ are described and figured by Denny as being "in the malescheliform (Fig...
Alpheus Spring Packard 「Our Common Insects」
...He explained that he relied upon the morphological charactersof the individual animal instead of upon the morphological charactersof a population of animals...
E. Raymond Hall 「Comments on the Taxonomy and Geographic Distribution of Some North American Marsupials, Insectivores and Carnivores」
...In southernBritish Columbia the morphological differences are not somarked as farther south along the Pacific Coast...
James S. Findley 「Speciation of the Wandering Shrew」
...The two species are now sympatric in west central México,where morphological characters (size and shape of body and lengthof skull) differ most...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...Differences in the morphological characters...
Robert G Webb 「Some Reptiles and Amphibians from Korea」
...nelsoni(Tepic, Nayarit—known from a single adult male) are closely related but areconsidered distinct because of their morphological differences and widelyseparated known ranges...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...In spite of itsrelatively high degree of morphological specialization, T...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...—Five species, two of which are made up of two subspecies,arranged in two groups of species on the basis of morphological characters ofadults and tadpoles and on the basis of breeding calls...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The most obvious morphological difference isthat the head is noticeably narrower in H...
William E. Duellman 「Middle American Frogs of the Hyla microcephala Group」
...The morphological similarityof P...
John M. Legler 「A New Subspecies of Slider Turtle (Pseudemys scripta) from Coahuila, Mexico」
...From the morphological point ofview both the vegetal and the animal Protists were simple organisms,individualities of the first order, or plastids...
Ernst Haeckel 「The Evolution of Man」
...We shall see presently how thisconclusion is justified in the present condition of morphological science...
Ernst Haeckel 「The Evolution of Man」
...The primitive worms ( Platodaria) are very small flat worms of simpleconstruction, but of great morphological and phylogenetic interest...
Ernst Haeckel 「The Evolution of Man」
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