“This is the science that concerns itself with plants in their local association in the various climates. This science, as vast as its object, paints with a broad brush the immense space occupied by plants, from the regions of perpetual snows to the bottom of the ocean, and into the very interior of the earth, where there subsist in obscure caves some cryptogams that are as little known as the insects feeding upon them.”

We believe that we have demonstrated the use of abstract marks to convey meaning about the behaviour of the animals with which they are associated, on European Upper Palaeolithic material culture spanning the period from ~37,000 to ~13,000 bp. In our reading, the animals integral to our analytical modules do not depict a specific individual animal, but all animals of that species, at least as experienced by the images’ creators. This synthesis of image, mathematical syntax (the ordinal/linear sequences) and signs functioning as words formed an efficient means of recording and communicating information that has at its heart the core intellectual achievement of abstraction.

We believe that the numeric notational marks associated with the animals constituted a calendar, and given that it references natural behaviour in terms of seasons relative to a fixed point in time, we may refer to it as a phenological calendar, with a meteorological basis.

These may occur on rock walls, but were commonly engraved onto robust bones since at least the beginning of the European Upper Palaeolithic and African Late Stone Age, where it is obvious they served as artificial memory systems (AMS) or external memory systems (EMS) to coin the terms used in Palaeolithic archaeology and cognitive science respectively, exosomatic devices in which number sense is clearly evident (for definitions see d’Errico Reference d'Errico1989; Reference d'Errico1995a,Reference d'Erricob; d'Errico & Cacho Reference d'Errico and Cacho1994; d'Errico et al. Reference d'Errico, Doyon and Colage2017; Hayden Reference Hayden2021).

We also demonstrate that the <Y> sign, one of the most frequently occurring signs in Palaeolithic non-figurative art, has the meaning <To Give Birth>. The position of the <Y> within a sequence of marks denotes month of parturition, an ordinal representation of number in contrast to the cardinal representation used in tallies.

Using a database of images spanning the European Upper Palaeolithic, we suggest how three of the most frequently occurring signs—the line <|>, the dot <•>, and the <Y>—functioned as units of communication.

Figurative cave art is the fief of Homo sapiens, going by present evidence (there is no evidence of figurative Neanderthal art). The earliest-known painting is of a warty pig; it was found just this year in a very inaccessible cavesite in Indonesia and is about 45,500 years old.

Part V. Connexion of Place