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Genera Quotes on Classification and Origins

Species, origins & classification

Several quotes use 'genera' in the strict biological sense, describing how species gradually diverge and split — a pattern Best observed across many kinds of organisms.

People began to understand that with the acquisition of California the nation had obtained practically half a continent, of which the future possibilities were almost unlimited, so far as the development of natural resources and the genera production of wealth...

Quotes by John Moody

The close relationship between railroad expansion and the genera development and prosperity of the country is nowhere brought more distinctly into relief than in connection with the construction of the Pacific railroads.

Quotes by John Moody

Splitting and gradual divergence of genera is exemplified very well and in a large variety of organisms.

Quotes by George Gaylord Simpson

I accept extinction as best explaining disjoined species. I see that the same cause must have reduced many species of great range to small, and that it may have reduced large genera to so small, and of families.

Quotes by Asa Gray

Accept Quotes

Is it philosophical, is it quite allowable, to assume without evidence from fossil plants that the family or any of the genera was once larger and wide spread? and occupied a continuous area?

Quotes by Asa Gray

In science, we take large numbers of disparate facts and reduce them to see patterns. We use the patterns to reduce the amount of information. It's the reason we name species and genera and families in biology. It's also the...

Quotes by Alan Stern

Frequently Asked Questions

What does 'genera' mean in a biological context?
Genera, the plural of genus, is a taxonomic rank grouping closely related species together. One quote notes that the gradual splitting and divergence of genera is well documented across a wide range of organisms, reflecting how new species branch off from shared ancestors.
Why do some of these quotes sound like they're about railroads or history rather than biology?
A few quotes use 'genera' in an older, more general sense tied to national development and prosperity, a usage common in older writing before the word narrowed almost entirely to its scientific meaning.
Is there scientific evidence for how genera form over time?
One quote references fossil plants and questions whether it's reasonable to assume, without direct evidence, that a family or genus was once more widespread than it is now — a nod to the evidentiary caution good taxonomy requires.
Do these quotes accept or question evolutionary ideas?
They lean toward careful, evidence-based thinking rather than blanket acceptance — one quote explicitly questions assuming too much from incomplete fossil records, encouraging skepticism before readers simply Accept claims about the past.
How is connection relevant to a topic about genera?
Classifying genera is fundamentally about tracing connection — which species share ancestry and how closely related they are — a theme explored more broadly in Connection.

Others use the word in an older, broader sense tied to national growth and prosperity, showing a Close Relationship between language and the era it comes from.