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Ammonite T-shirts & Mugs
A 19th century engraving of an ammonite, digitized and adapted for printing on your choice of Cartesian Bear products.
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite T-Shirt
31 colors | $22.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Organic T-Shirt
7 colors | $25.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's T-Shirt
11 colors | $22.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Travel Mug
$20.99
Deluxe Cotton Hat
Deluxe Cotton Hat
4 colors | $20.99
Alternative Apparel Destroyed T-Shirt
Alternative Apparel Destroyed T-Shirt
10 colors | $31.99
Alternative Apparel Women's Destroyed T-Shirt
Alternative Apparel Women's Destroyed T-Shirt
9 colors | $30.99
Alternative Apparel Burnout T-Shirt
Alternative Apparel Burnout T-Shirt
8 colors | $35.99
Alternative Apparel Women's Burnout T-Shirt
Alternative Apparel Women's Burnout T-Shirt
10 colors | $35.99
Hanes Cool Dri T-shirt
Hanes Cool Dri T-shirt
7 colors | $27.99
American Apparel Men's T-Shirt
American Apparel Men's T-Shirt
14 colors | $25.99
Large Coffee Mug 15oz
Large Coffee Mug 15oz
$14.99
Coffee Mug 11oz
Coffee Mug 11oz
$12.99
Cutting Board
Cutting Board
$32.99
Frosted Glass Stein
Frosted Glass Stein
$21.99
Travel Mug
Travel Mug
$21.99
Can Cooler
Can Cooler
$10.99
Aluminum Water Bottle
Aluminum Water Bottle
$23.99
Round Ornament
Round Ornament
$12.99
Laptop Sleeve
Laptop Sleeve
$22.99
iPad Sleeve
iPad Sleeve
$22.99
Hanes Women's Cool Dri T-shirt
Hanes Women's Cool Dri T-shirt
5 colors | $27.99
Alternative Apparel Unisex Zipper Hoodie
Alternative Apparel Unisex Zipper Hoodie
3 colors | $51.99
Canvas Freemont Full-Zip Hoodie
Canvas Freemont Full-Zip Hoodie
6 colors | $51.99
Laptop Sleeve
Laptop Sleeve
$23.99
Round Ornament
Round Ornament
$13.99
Cork Bottom Coaster
Cork Bottom Coaster
$8.49
Canvas Zipper Tote
Canvas Zipper Tote
$22.99
BBQ Apron
BBQ Apron
$19.99
Jumbo Tote Bag
Jumbo Tote Bag
$20.99
Next Level Women's 65/35 Blended Tee
Next Level Women's 65/35 Blended Tee
4 colors | $24.99
Next Level Men's 65/35 Blended Tee
Next Level Men's 65/35 Blended Tee
6 colors | $24.99
Next Level Women's Tri-Blend T-Shirt
Next Level Women's Tri-Blend T-Shirt
6 colors | $26.99
Next Level Men's Tri-Blend T-Shirt
Next Level Men's Tri-Blend T-Shirt
6 colors | $26.99
Next Level Men's T-Shirt
Next Level Men's T-Shirt
10 colors | $23.99
Next Level Women's T-Shirt
Next Level Women's T-Shirt
12 colors | $23.99
Toddler Tee
Toddler Tee
7 colors | $27.99
Infant Onesie
Infant Onesie
7 colors | $27.99
American Apparel Women's T-Shirt
American Apparel Women's T-Shirt
12 colors | $25.99
American Apparel Fine Jersey Long Sleeve Tee
American Apparel Fine Jersey Long Sleeve Tee
4 colors | $29.99
American Apparel 50/50 Tee
American Apparel 50/50 Tee
5 colors | $27.99
iPad Sleeve
iPad Sleeve
$23.99
Mousepad
Mousepad
$13.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Cap Sleeve Tee
8 colors | $27.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Camisole Tank
2 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Baseball Tee
8 colors | $28.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Baby Rib Tee
7 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Baby Rib Long Sleeve Tee
3 colors | $28.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Organic Women's T-Shirt
7 colors | $30.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Large Coffee Mug 15oz
$17.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Frosted Glass Stein
$21.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Coffee Mug 11oz
$15.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Can Cooler
$7.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Aluminum Water Bottle
$23.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Sleeveless T-Shirt
6 colors | $28.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Ringer T-Shirt
8 colors | $24.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Organic Long Sleeve T-Shirt
5 colors | $34.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Long Sleeve T-Shirt
20 colors | $31.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Hooded Sweatshirt
3 colors | $38.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Crewneck Sweatshirt
3 colors | $29.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Fine Jersey Tee
4 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Ringer Tee
8 colors | $27.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Spaghetti Strap Tank
6 colors | $26.99
Canvas Zipper Tote
Canvas Zipper Tote
$24.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Jumbo Tote Bag
$25.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Organic Kids T-Shirt
7 colors | $30.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Kids T-Shirt
21 colors | $22.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Kids Ringer T-Shirt
6 colors | $24.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Kids Long Sleeve T-Shirt
11 colors | $31.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Kids Hooded Sweatshirt
4 colors | $37.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Kids Crewneck Sweatshirt
4 colors | $28.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Women's Fitted Tank Top
4 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Girls Baby Rib T-Shirt
3 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Baseball Jersey
8 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Girls Cap Sleeve T-Shirt
5 colors | $25.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Girls Ringer T-Shirt
4 colors | $25.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Kids Baseball Jersey
4 colors | $26.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Cork Bottom Coaster
$7.49
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Cutting Board
$35.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite BBQ Apron
$21.99
A 19th century engraving of the classic, spiral-shaped ammonite shell. Just the thing for biologists, animal lovers — and geometry fans, too. Exclusively from Cartesian Bear.
Ammonite Mousepad
$14.99
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