Birmingham pen trade same time Osmiroid International had a large production plant in the city. Birmingham pen trade The Birmingham pen trade evolved in the Birmingham Jewellery Quarter and its surrounding area in the 19th century; for many years, the city was the centre of the world's pen trade. In Newhall Street, John Mitchell manufactured pens; he pioneered mass production of steel pens (prior to this, the quill pen was the most common form of writing instrument). Mitchells are credited as being the first manufacturers to use machines to cut pen nibs, greatly speeding up the process. John's brother William later set up
20th century in ichnology Using only its footprints as a guide he reconstructed the life appearance of the "Chirotherium" trackmaker. Decades later paleontologists described an animal named "Ticinosuchus" which precisely fulfilled Soergel's predictions. "Ticinosuchus" or a close relative seems to have been the true "Chirotherium" trackmaker. During the 20th century, many significant fossil trackway discoveries were made in the western United States. In the and 1940s, Roland T. Bird discovered the tracks of large sauropod and theropod dinosaurs in Texas. He excavated a major section of the track ways on behalf of the American Museum of Natural History. This was the first large scale