مستويات التصنيف. أي مستويات التصنيف يضم اكبر عدد من المخلوقات الحية

The Endangered Species Act at Thirty, Volume 2: Conserving Biodiversity in Human-Dominated Landscapes	New York: Columbia University Press
"Chloroplast DNA variation and reticulate evolution in sexual and apomictic sections of dandelions"

"Ring species — Do they exist in birds? ; Stackebrandt, Erko; De Peer, Yves Van; Vandamme, Peter; Thompson, Fabiano L.

رتب مستويات التصنيف للمخلوقات الحية: Some English levelling schemes are built in to a particular English test, while others are theoretical frameworks without any associated test
رتب مستويات التصنيف للمخلوقات الحية: Ron, Santiago; Caminer, Marcel 2014
نوع (تصنيف): "Sex and the emergence of species"

"Is Ensatina eschscholtzii a ring species? Gevers, Dirk; Cohan, Frederick M	0 550 - 780 140 - 159 43 - 58 B2 Upper Intermediate 51 - 60 72 - 94 5
Symposium on Biosystematics, Montreal, October 1962	The Units of Biodiversity — Species in Practice Special Volume 54

There are many different English leveling systems in use around the world, and an even wider variety of English tests, which have implicit or explicit leveling systems built into their scoring.

مستويات التصنيف في علم الأحياء Taxonomic Categories in Biology: "Taxonomic inflation, the Phylogenetic Species Concept and lineages in the Tree of Life — a cautionary comment on species splitting"
ترتيب مستويات التصنيف في تصنيف الكائنات الحية: "The 'species aggregate' in theory and practice"
4 خصائص لعلم تصنيف الكائنات الحية: Combining morphology and DNA barcoding resolves the taxonomy of Western Malagasy Liotrigona Moure, 1961

Woese C, Kandler O, Wheelis M 1990	"The mind of the species problem"
The Classification of Lower Organisms	"Seventy-Two Proposals for the Conservation of Types of Selected Linnaean Generic Names, the Report of Subcommittee 3C on the Lectotypification of Linnaean Generic Names"

Proc Natl Acad Sci U S A.

مستويات التصنيف: Liebers, Dorit; Knijff, Peter de; Helbig, Andreas J
مستويات التصنيف في علم الأحياء Taxonomic Categories in Biology: Quasispecies: Concept and Implications for Virology
4 خصائص لعلم تصنيف الكائنات الحية: "Definitions of Species in Biology"