The brachiopod in the left of the first picture is considered large while the other is about the average size found.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi81WabMOS7ee_Jh-cQLYuoTVpDsj7rQ2T1G0bLnHqT5H2_4ofbRGYO4r07izQplc1aIsndyiQYBZspChsTHCkOxD9P1c0m37PlplPr07DSssjud9WOcyDBgIdWJ-XMckP1s06UCMCR_nav/s400/Spinatrypa1.jpg)
Close up view of the larger brachiopod shown earlier of its brachial valve.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEip3EPiJ6qXwcLgJ3VymE5P41zrWjYyMQ5Hy6JT_Kum_G9enRiyaxHFvXLrrGHQGamTBaRfi9b4ZLngwYRB7ZfPAy93c2fd5Ji3A8Tp43EFBgJ0r6vaj1HfbdsmteusLNYnjm8oBfkCbX-a/s400/Spinatrypa2.jpg)
I have included a picture of a Devonian brachiopod I found here in Louisville, Kentucky with one found in the Northwest Territories of Canada.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEr1A0P_f7RWUwfOpa1-itKMt2bQXo9w1bLCVjbCvZ55v4MnH5kxNx4UwpB2-YECEHbDh0EqOsYe3wE3FgbW0O0nmmcPmO47h-DPYwJC21v7PVLm_3KVS95FkUNmLidcgG3HpyCGRP8Dsg/s400/two-devonian-brachiopods.jpg)