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Description
The body plans of the three creatures share symmetries of vertebrates, arthropods and echinoderms. But they all have appendages characteristic of cephalopods.

It is often assumed that "quadrapii" is a misspelling of "quadrapuses", "quadrapi" or "quadrapodes". But the singular form is "quadrapius" (not "quadrapus"). Also see plural forms of words ending in -us and latin words in the second declension .

A colored, non-periodic Thue-Morse sequence tiling .

Clifford Pickover used this image to illustrate the Thue-Morse sequence page of his wonderful "The Math Book : From Pythagoras to the 57th Dimension, 250 Milestones in the History of Mathematics".

Artifact Puzzles used these shapes as the basis for puzzle pieces, where each piece is slightly different across the puzzle. They call these "split tendril connectors":www.artifactpuzzles.com/collec…
Their laser cut wood puzzles are good quality, and these pieces make for challenging visual matching of pieces.

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There are no restrictions on use of this image. Claiming to be the originator or owner, explicitly or implicitly, is bad karma . A link (if appropriate), a note to markdow30@gmail.com, and credit are appreciated but not required.

Description
The body plans of the three creatures share symmetries of vertebrates, arthropods and echinoderms. But they all have appendages characteristic of cephalopods.

It is often assumed that "quadrapii" is a misspelling of "quadrapuses", "quadrapi" or "quadrapodes". But the singular form is "quadrapius" (not "quadrapus"). Also see plural forms of words ending in -us and latin words in the second declension .

A colored, non-periodic Thue-Morse sequence tiling .

Clifford Pickover used this image to illustrate the Thue-Morse sequence page of his wonderful "The Math Book : From Pythagoras to the 57th Dimension, 250 Milestones in the History of Mathematics".

Artifact Puzzles used these shapes as the basis for puzzle pieces, where each piece is slightly different across the puzzle. They call these "split tendril connectors":www.artifactpuzzles.com/collec…
Their laser cut wood puzzles are good quality, and these pieces make for challenging visual matching of pieces.

----------------------
There are no restrictions on use of this image. Claiming to be the originator or owner, explicitly or implicitly, is bad karma . A link (if appropriate), a note to markdow30@gmail.com, and credit are appreciated but not required.