Ammonites were incredible sea creatures that first entered the fossil record 400 million years ago. They survived several mass extinction events, including the Permian–Triassic "Great Dying" which wiped out 96% of all marine species. They finally succumbed during the Cretaceous-Paleogene extinction event 66 million years ago, which also wiped out the dinosaurs.

The size of ammonite shells range from sub-centimeter dwarf species to giants nearly three meters in diameter. Most iconic shells exhibit a nearly perfect logarithmic spiral.

This youth t-shirt celebrates the unique mathematical beauty of these animals. Show off your love for one of Earth's coolest fossils!

Note: Currently, this shirt is only available for US Shipping.

• 100% combed and ring-spun cotton
• Heather colors are 52% combed and ring-spun cotton, 48% polyester
• Athletic Heather is 90% combed and ring-spun cotton, 10% polyester
• Fabric weight: 4.2 oz/yd² (142 g/m2)
• Pre-shrunk fabric
• 32 singles
• Relaxed unisex fit
• Side-seamed construction
• Blank product sourced from Nicaragua, the US, Guatemala, or Honduras

Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.

Note: This product is printed on demand for you when you place an order. It will ship separately from other items in your order. Fulfillment time is between 2-5 business days and shipping time is estimated between 4-21 business days.