James St. John:
Lingula permiana fossil brachiopod in shale (Washington Coal interval, Upper Pennsylvanian; Narrows Run South roadcut, Belmont County, Ohio, USA) 1
James St. John:
Lingula permiana fossil brachiopod in shale (Washington Coal interval, Upper Pennsylvanian; Narrows Run South roadcut, Belmont County, Ohio, USA) 2
James St. John:
Lingula permiana fossil brachiopod in shale (Washington Coal interval, Upper Pennsylvanian; Narrows Run South roadcut, Belmont County, Ohio, USA) 3
James St. John:
Lingula sp. (fossil brachiopod) in nodule (Rushville Shale, Lower Mississippian; Trinway West 6 Outcrop, Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 1
James St. John:
Lingula sp. (fossil brachiopod) in nodule (Rushville Shale, Lower Mississippian; Trinway West 6 Outcrop, Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 2
James St. John:
Lingula sp. (fossil brachiopod) in nodule (Rushville Shale, Lower Mississippian; Trinway West 6 Outcrop, Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 3
James St. John:
Lingulid brachiopod in black shale (Allegheny Group, Middle Pennsylvanian; Flint Ridge, Ohio, USA)
James St. John:
Lingula sp. (brachiopod shell) (modern; Masbate, Philippines) 1
James St. John:
Lingula sp. (brachiopod shell) (modern; Masbate, Philippines) 2
James St. John:
Lingula cuneata (inarticulate brachiopods) (Medina Sandstone, Lower Silurian; Medina, New York State, USA) 1
James St. John:
Lingula cuneata (inarticulate brachiopods) (Medina Sandstone, Lower Silurian; Medina, New York State, USA) 2
James St. John:
Lingula cuneata (inarticulate brachiopods) (Medina Sandstone, Lower Silurian; Medina, New York State, USA) 3
James St. John:
Lingula cuneata (inarticulate brachiopods) (Medina Sandstone, Lower Silurian; Medina, New York State, USA) 4
James St. John:
Lingula cuneata (inarticulate brachiopods) (Medina Sandstone, Lower Silurian; Medina, New York State, USA) 5
James St. John:
Lingula cuneata (inarticulate brachiopods) (Medina Sandstone, Lower Silurian; Medina, New York State, USA) 6