Colorado Stegosaurus Shirt | They Were Here First | Morrison Formation Dinosaur Tee
Unisex fit — check the size chart; most people order their usual size.
Size guidePlease choose a size first.
Printed near you in the US, Canada, the UK, Europe or Australia in 2–5 business days, then 3–8 business days to the US (tracked). US shipping $4.95, free on orders $60+.
Christmas delivery: order by Dec 7. Not sure of the size? Gift orders get one free size exchange.
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- Built from fossil evidenceScientifically informed paleo-art
- Free shipping $60+US, Canada, UK & Australia
- Pay your wayCards, wallets & Klarna
Size & fit
Unisex relaxed fit: a heavier, roomier tee than a standard fitted shirt. Order your usual size for a relaxed look; women often prefer one size down. Sizes S–4XL.
| Size | Length | Width |
|---|---|---|
| S | 26⅝ | 18¼ |
| M | 28 | 20¼ |
| L | 29⅜ | 22 |
| XL | 30¾ | 24 |
| 2XL | 31⅝ | 26 |
| 3XL | 32½ | 27¾ |
| 4XL | 33½ | 29¾ |
| Size | Length | Width |
|---|---|---|
| S | 67.6 | 46.4 |
| M | 71.1 | 51.4 |
| L | 74.6 | 55.9 |
| XL | 78.1 | 61 |
| 2XL | 80.3 | 66 |
| 3XL | 82.6 | 70.5 |
| 4XL | 85.1 | 75.6 |
Garment measurements, laid flat (Comfort Colors 1717). Length: from the high point of the shoulder to the hem. Width: straight across the chest, armpit to armpit. Tip: lay a shirt that fits you well flat and compare. Measurements may vary by up to 2 in (5 cm).
Fabric & print quality
Comfort Colors 1717 garment-dyed heavyweight tee. 100% ring-spun cotton, 6.1 oz/yd² (207 g/m²), garment-dyed for a soft, lived-in feel, relaxed fit, twill-taped neck and shoulders.
Print: direct-to-garment (DTG) printing with water-based inks, printed into the fibers so the design stays soft and breathable. Turn inside out and wash cold to keep colors vivid for years.
Printing & shipping
Each piece is printed for you when you order, at the facility closest to you (US, Canada, UK, Europe or Australia), so there is no overstock and less waste. As soon as your order ships you receive a tracking link by email.
Production takes 2–5 business days, then delivery to the US takes about 3–8 business days. Free shipping on orders of $60 or more to the US, Canada, the UK and Australia.
Care
Wash cold, inside out, with similar colors. Tumble dry low or hang dry. Do not iron directly on the print and do not dry clean.
Colorado's state fossil is a Jurassic classic. Stegosaurus lived among the rivers and conifer forests of the Morrison Formation, about 150 million years ago.
A realistic 3D-style Stegosaurus swings its spiked tail toward you, framed by bold "THEY WERE HERE FIRST" type and the details that matter: Stegosaurus · Morrison Formation · 150 million years ago. Scientifically informed, and made to stand out on a dark shirt.
- Comfort Colors 1717 garment-dyed heavyweight tee
- 100% ring-spun cotton, 6.1 oz/yd², relaxed fit
- Soft, lived-in washed feel
- Colors: Black and True Navy. The design is made for dark shirts.
- Made to order for you



