Measurements of Silurian brachiopod specimens from the Pentland Hills, Scotland

The abundant and diverse brachiopod fauna from the Silurian (upper Llandovery-lower Wenlock) rocks of the Pentland Hills is described within its geographical stratigraphical context. The majority of species are described in detail, discussed and illustrated. A total of 53 species attributable to the following superfamilies are present (numbers of species, including those in open nomenclature, in parentheses):  Linguloidea (7), Craniopsoidea (1), Discinoidea (4), Strophomenoidea (9), Plectambonitoidea (2), Chonetoidea (1), Childiopsoidea (2), Skenidioidea (1), Dalmanelloidea (3), Pentameroidea (2), Rhynchonelloidea (4), Atrypoidea (4), Athyridoidea (5), Cyrtioidea (5) and Delthyridoidea (3). Five new species,  Leptaena eska, Isorthis (Ovalella) clarksoni, Dicoelosia paratenua, Oglupes scotia and Lissatrypa scotica, are erected. Nevertheless in terms of abundance the fauna is dominated by individuals belonging to the Strophomenoidea, Plectambonitoidea and Dalmanelloidea. The composition o..., These are measurements made on fossil brachiopod internal and external moulds., , # Measurements of Silurian brachiopod specimens from the Pentland Hills, Scotland

## Description of the data and file structure

The data are loosely structured in an Excel spreadsheet and and be cut and pasted if necessary.

**Brachiopod measurements**

Taxa, and the raw measurements taken from them, are listed here in alphabetical order. The number of ventral and dorsal valves measured is included. The measurement variates used (X1, X2, etc) are explained below. Specimen numbers are colour coded according to the formation in which they were located: red – Wether Law Linn Formation, purple – Cock Rig Formation, green – Deerhope Formation, blue – Reservoir Formation.

Measurements variates used in the present study, modified from Harper (1989). All measurements are in millimetres. Missing cells record missing data, due to incomplete specimens.

X1        sagittal length

X2        maximum width

X3        position of maximum width measured from posterior margin

X4        maximum dep...