Agnostus Nudus

“Four stages in the development of the trilobite Agnostus nudus. A, Youngest stage with no mesosomatic somites; B and C, stages with two mesosomatic somites between the prosomatic and telsonic carapaces; D, adult condition, still with only two free mesosomatic somites.” — The Encyclopedia Britannica, 1910

Keywords

trilobite, Nudus, Mesosomatic, Agnostus, Somites, Carapaces

Galleries

Spiders, Mites and Scorpions

Source

The Encyclopedia Britannica, Eleventh Edition (New York: The Encyclopedia Britannica Company, 1910)II:301

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