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Palaeontology and dinosaurs (science, public domain) Public domain

Evolution Women's T-shirt

Ammonites · Women's cut T-shirt, 142 gsm

Ammonites, women's T-shirt in black

33.95 €

VAT included · shipping 4.29 € to

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

Colour and size

Colour black

Size

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It is printed in the European Union and ships to you from there. 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 women's t-shirt 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 Bella + Canvas 6400 Women's Relaxed, 142 g/m². The last thumbnail is the original print the design comes from.

The garment

Model
Bella + Canvas 6400 Women's Relaxed
Brand
Bella + Canvas
Composition
Black — 100% ring-spun combed cotton Charcoal — 52 % algodón peinado e hilado en anillos, 48 % poliéster Navy — 100% ring-spun combed cotton White — 100% ring-spun combed cotton
Weight
142 g/m²
Cut
Women's, relaxed fit, side-seamed with a crew neck; pre-shrunk fabric
Printing
Direct-to-garment (DTG), water-based inks
Recommended care
Wash inside out at 30 °C. Do not bleach. Do not iron over the print

This model does not use the same fabric in every colour: the composition is given colour by colour.

Data from the Printful spec sheet (Bella + Canvas 6400 Women's Relaxed), 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 women's T-shirt is like

It is a Bella + Canvas 6400, the women's pattern from the same house as the unisex and with the same weight of 142 gsm. The fabric depends on the colour: in black, navy and white it is combed, ring-spun cotton; the anthracite is a heather and carries 52% cotton and 48% polyester, which is what gives it that speckled grey. What changes from the unisex is the cut: crew neck, narrower shoulder, side seam and a length meant to stop at the hip. It is a relaxed cut, not a fitted one; if you want it to hug, take one size down.

Read more about this women's t-shirt

The print goes straight onto the garment with water-based inks, on pre-washed fabric, exactly as on the unisex one. What is not the same is the canvas: the cut is shorter and narrower, so the same drawing takes up proportionally more chest and reads bigger than it does on the unisex T-shirt of the same design.

Inside out, at 30 °C, no bleach, and keep the iron off the print. It runs from S to 2XL. It is a fine 142 gsm knit, so in white and in light colours count on it being slightly sheer. The measurements in the table below are those of this garment laid flat, not those of the unisex pattern: the other one's do not apply.

«Ammonites» is also on t-shirt, 23.95 € · mug, 26.95 € · premium t-shirt, 32.95 € · poster, 32.95 € · 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.

The 6400 pattern has less chest, so the spiral comes out bigger and closer to the neck than on the unisex. On a circular drawing that is welcome: there is no composition to go out of kilter when you enlarge it, only ribs that open up and read better.

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 garment, not of your body. Take one that fits you the way you like, lay it flat and measure: the width from seam to seam below the sleeve, and the length from the highest point of the shoulder down to the hem. These are the ones the factory itself publishes, in centimetres.

Measurements in centimetres, where it is made and the price of each size
Size LengthWidth Made in Price
S 64,1 47 Spain 33.95 €
M 66 50,8 Spain 33.95 €
L 68 55,9 Spain 33.95 €
XL 69,8 61 Spain 33.95 €
2XL 71,8 66 Spain 35.95 €

Manufacturing tolerance: ±2 cm, as with any cotton garment.

Sizes 2XL cost more because they use more fabric and the factory charges us more for them: we would rather say so here and stock them than not have them. The regular sizes all cost the same.

«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.
Is it the same T-shirt as the unisex one?
The weight yes —142 gsm both of them—, the pattern no, and the fabric not in every colour either: the unisex one is 100% cotton in the four colours we sell, and here the anthracite is a heather with 48% polyester. This one is the Bella + Canvas 6400: crew neck, women's fit, narrower shoulder and hip length. Anyone after room usually prefers the unisex; anyone who does not want it hanging off the shoulder, this one.
Can I trust the size I take in the unisex?
Not quite: they are two different cuts and the measurements in the chart change. Lay flat a women's T-shirt you already own, measure it and compare it with the width column, which is where the difference between the two patterns shows most.
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 sizes cost more?
Because they use more fabric and the factory charges us more. We would rather stock the large sizes and say so in the table than not have them. The regular sizes all cost the same.
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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Appears in

Size guide

Measurements of the garment laid flat, in centimetres — not of your body. Tolerance ±2.5 cm. If you are between two sizes and want it roomy, take the bigger one.

MeasurementSMLXL2XL
Length 64,1666869,871,8
Width 4750,855,96166

How to get it right without trying it on: take a garment of yours of the same kind that fits you the way you like, lay it flat and measure the width from armpit to armpit, and the length from shoulder to hem. Find the closest size in the table. It is more reliable than your usual size, which changes with every brand.

Manufacturer measurements, Bella + Canvas 6400 Women's Relaxed, synced from their catalogue.

33.95 € Ammonites · women's t-shirt