In beds of the same series in this section the following marine organisms have been obtained, according to Peach and Horne:
- Amphispongia sp.
- Nidulites favus Salt.
- Dictyonema venustum Lapw.
- Dictyonema (Chondrites) verisimile Salt.
- Cyrtograptus murchisoni ? Carr.
- Monograptus priodon Bronn.
- Monograptus vomerinus Nich.
- Favosites sp.
- Tentaculites tenuis Sow.
- Palasterina sp.
- Crinoid fragments.
- Lingula lewisi Sow.
- Lingula symondsi Salt.
- Strophomena walmstedti Lindst.
- Euomphalus rugosus Sow.
- Conularia monile Lindst.
- Conularia sowerbyi Def.
- Conularia sp.
- Orthoceras angulatum Wahl.
- Gomphoceras ellipticum ? M'Coy
The form described as Bembicosoma pomphicus is somewhat problematical and may be more nearly related to Hemiaspis than to the eurypterids. Of special interest is the finding of a scorpion in these beds. There is only one specimen of Palaeophonus loudenensis and this is in a bad state of preservation so that it is impossible to tell whether this early scorpion was aquatic and gill-bearing, or terrestrial. Drepanopterus is a new genus founded by Laurie for the three species: pentlandicus, bembicoides, and lobatus, but they are all described from imperfect material; the first from a fairly good specimen, the other two from a few slightly better.[1] Laurie's genus Bembicosoma[2] with the one species pomphicus was established for a few rather good fragments, which, however, were only doubtfully identified. Slimonia dubia, also described by Laurie, is but poorly represented, as are likewise the three species of Stylonurus: elegans, ornatus and
- ↑ Clarke and Ruedemann have placed Drepanopterus as a subgenus of Stylonurus.
- ↑ Laurie originally spelt the name Bembycosoma and the species of Drepanopterus, bembycoides, but in the corrigenda to his 1900 paper, p. 500, (147) he called attention to the proper form Bembicosoma and bembicoides, a change which has not been noted by later authors.
