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Palaeontology and dinosaurs (science, public domain) Public domain

Evolution Poster

Ammonites · Print on 189 gsm matte paper, unframed

Ammonites, print on matte paper

32.95 €

VAT included · shipping 4.29 € to

Delivery in 3-4 working days arrives between 9 and 12 October

Size

Size

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Printed in the European Union, in the size you pick. No customs, no import charges. Delivery times measured against the printer on 19 August 2026.

More designs from Evolution

3 designs for Evolution, on the same poster and at the same price.

Ammonites Ammonites La cadena de Merian La cadena de Merian Lámina de Hawkins, 1854 Lámina de Hawkins, 1854

Printed on Enhanced Matte Paper Poster, 189 g/m².

The garment

Model
Enhanced Matte Paper Poster
Composition
Museum-grade matte paper, 10.3 mil thick and 94% opaque, made in Japan
Weight
189 g/m²
Printing
Digital print. Supplied unframed
Recommended care
Frame without direct contact with the glass

Data from the Printful spec sheet (Enhanced Matte Paper Poster), read on 19 August 2026. The care advice is ours: the manufacturer does not publish the washing label.

Where it comes from: source, motifs and legal status
Source
Palaeontology and dinosaurs (science, public domain)
Motifs
T. rex skeleton · Victorian scientific plate · the amber with the mosquito · Mary Anning and the first fossils · the ammonite · lithograph by Hawkins (1854)
Legal status
Public domain. The design is ours; the material it starts from belongs to everyone
The whole collection →

What this print is like

Matte paper of Japanese origin, 189 gsm and 94% opacity. Matte means it does not shine under a lamp and throws no reflection when you photograph it, and that 94% means nothing comes through: you see neither the back nor the wall behind. It is the only piece in the catalogue where the design goes on its own, with no seam, no pocket, no handle and no collar to cut it in half.

Read more about this poster

It comes unframed and in five sizes, from A4 at 21 × 29.7 cm up to 61 × 91 cm. The sizes are ordinary on purpose: you frame them with an off-the-shelf frame and there is nothing to order made to measure. Since it is not a garment, there is no colour to choose here: the paper is white and the only thing that changes between sizes is how much wall the drawing takes up.

If you frame it, keep the paper off the glass. A mount or a few spacer tabs leave an air gap, and that is what stops the ink from sticking to the glass after a few damp years. Rule of thumb for choosing a size: a print looks right from about one and a half times its diagonal, so the medium ones work for a hallway or above a desk and the big one needs a clear wall.

«Ammonites» is also on t-shirt, 23.95 € · mug, 26.95 € · premium t-shirt, 32.95 € · women's t-shirt, 33.95 € · sweatshirt, 54.95 € · hoodie, 61.95 €

The drawing on «Ammonites»

An ammonite shell coiled on itself: three turns of spiral, the radial ribs crossing it from the inside out, the umbilicus at the centre and the open mouth of the last chamber. A fossil drawn as a fossil, not as spiral decoration.

Where this drawing comes from

What is drawn is a fossil, not a pretty spiral: that is why the umbilicus at the centre and the open mouth of the last chamber are there, which is where the animal came out.

It is the design in the catalogue that gains most on a wall, because it is the only one you can measure by eye: at 61 × 91 cm you follow the three whorls with a finger and see that each one is two and a half times wider than the last. On a T-shirt that is a handsome ornament; at wall size it is the proof of why Bernoulli found it miraculous.

The spiral is not traced: it is calculated. It is the logarithmic spiral r = a·k^(θ/2π) with a growth ratio of 2.55 per turn, which is that of the genus Dactylioceras of the Lower Jurassic. Jacob Bernoulli called it «spira mirabilis» in 1692 for precisely that property, and D'Arcy Thompson gives it chapter XI of «On Growth and Form» (1917).

Where this design comes from →

Sizes: measurements, where each one is made and what it costs

Measurements of the item in centimetres, as published by the factory itself.

Measurements in centimetres, where it is made and the price of each size
Size AnchoAlto Made in Price
8.27″×11.69″ 21 29,7 the EU 32.95 €
12″×16″ 30,5 40,6 Spain 42.95 €
16″×20″ 40,6 50,8 Spain 52.95 €
24″×36″ 61 91,4 Spain 82.95 €
18″×24″ 45,7 61 Spain 62.95 €

The larger formats 12″×16″, 16″×20″, 24″×36″, 18″×24″ cost more because they cost the printer more: we would rather say so here and stock them than not have them.

«Made in» comes from the warehouse Printful declares for that exact size, not from an estimate of ours.

What you ask us before buying

Is the spiral traced from a fossil?
It is calculated, not traced: a logarithmic spiral with a growth ratio of 2.55 per whorl, which is the one of the genus Dactylioceras from the Lower Jurassic. And what is drawn is a fossil, with its umbilicus at the centre and the last chamber open, not a decorative spiral with a few stripes added on.
Does it come framed?
No, only the paper is supplied. The five sizes are standard —the small one is an A4 and the largest 61 × 91 cm—, so you frame it with a shop-bought frame without ordering anything made to measure.
How do I frame it without ruining it?
Keep the paper off the glass: a mount or a few spacer tabs leave an air gap and stop the ink from sticking to the glass in damp weather. It is matte paper, 189 gsm and 94% opacity, so it neither shows through nor throws a reflection under a lamp.
How long does it really take?
3 to 4 working days, printing and shipping included — the same lead time the rest of the site gives, because there is only one. The piece is made in the European Union, and that is where the lead time comes from. Above, over the button, you have the exact date for this one. The table below says where each size is made.
How much is shipping?
The page itself says so, above the button, before you pay and for whichever destination you pick in the dropdown. To Spain it is 4.29 €. The amount comes from the same rate the checkout charges, not from a separate list.
Why do some formats cost more?
Because they cost the printer more. The price of each format is in the table above, not in the cart.
Can it be returned?
Yes. You have 14 days to withdraw without giving reasons — it is not a personalised product, so the right of withdrawal covers you — and 3 years of legal guarantee. If it arrives faulty or badly printed, we redo it or give you your money back. How it is made.
Where does the drawing on «Ammonites»?
The spiral is not traced: it is calculated. It is the logarithmic spiral r = a·k^(θ/2π) with a growth ratio of 2.55 per turn, which is that of the genus Dactylioceras of the Lower Jurassic. Jacob Bernoulli called it «spira mirabilis» in 1692 for precisely that property, and D'Arcy Thompson gives it chapter XI of «On Growth and Form» (1917). It is in the public domain: the drawing is ours, the material it starts from belongs to everyone.
Who is selling?
Flexibles y Accesorios Gobe, S.L. · CIF B56727993. Prices include VAT.

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32.95 € Ammonites · poster