Guppy
Robert John Lechmere Guppy discovered this tiny fish in Trinidad in 1866.
They were discovered in 1866.
1866
In 1866.
Diphyllobothrium latum was first described by Rudolf Virchow in 1866.
The German mathematician Georg Friedrich Bernhard Riemann (1826 - 1866).
The kingdom Monera was proposed in 1866 by German scientist Ernst Haeckel, who classified all single-celled organisms without a distinct nucleus into this group. It has since been replaced by the domain Bacteria and Archaea in modern classification systems.
George Everest was born in 1790 and died in 1866 aged 76.
The first model of the Winchester rifle was the Winchester Model 1866, and as it's name implies it was released in 1866. It became quite popular and became the starting point for a successful line of firearms.
the 1866 elections were mostly about who should control the reconstruction Rutherford b. Hayes won the popular vote and removed federal troops from the south this deal singled the end of the reconstruction This answer describes the Presidential election of 1876. The 1866 election was the Congressional mid-term election of the Andrew Johnson administration.
No U.S. president was born in 1866.
Eddy believed she discovered the spiritual science behind Jesus' healing works and she was the founder of Christian Science in 1866.