Pterosaurs are an extinct clade of flying reptiles in the order Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 to 66 million years ago). Pterosaurs are the earliest vertebrates known to have evolved powered flight. Their wings were formed by a membrane of skin, muscle, and other tissues stretching from the ankles to a dramatically lengthened fourth finger.
Dunkleosteus could quickly open and close its jaw, creating suction like modern-day suction feeders, and had a bite force that is considered the highest of any living or fossil fish, and among the highest of any animal. Fossils of Dunkleosteus have been found in North America, Poland, Belgium, and Morocco.
The unisex soft-style t-shirt puts a new spin on casual comfort. Made from very soft materials, this tee is 100% cotton for solid colors. Heather colors and sports grey include polyester. The shoulders have twill tape for improved durability. There are no side seams. The collar is made with ribbed knitting to prevent curling damage.
.: Made with 100% ring-spun cotton, a lightweight fabric (4.5 oz/yd² (153 g/m²)), this unisex t-shirt feels like a bliss to wear all year round. 
.: The classic fit with the crew neckline deliver a clean, versatile style that can match any occasion, whether it's formal or semi-formal. 
.: All shirts feature a pearlized, tear-away label for total wearing comfort. 
.: Made using ethically grown and harvested US cotton. Gildan is also a proud member of the US Cotton Trust Protocol ensuring ethical and sustainable means of production. This blank tee is certified by Oeko-Tex for safety and quality assurance.
.: Fabric blends: Heather colors - 35% ring-spun cotton, 65% polyester; Sport Grey and Antique colors - 90% cotton, 10% polyester, Graphite Heather - 50% ring-spun cotton, 50% polyester