FIGURE 1. 1: Simplified geological map of the North Esk Inlier in the vicinity of the North Esk Reservoir (north-east quadrant), with indication of some of the best known fossiliferous localities (R-numbers); localities from Haswell (1865) are also indicated, noted B to H, K, L: E=R245, F=R57, G=R263 or R265, H=R82, K=R101, L=R93; Gutterford Starfish Bed: R199; GSB: Gutterford Starfish Bed as described by Peach and Horne (1899). Grid reference in margin [NT]. Adapted from Clarkson and Taylor (2007a) and Anderson et al. (2007). 2: Stratigraphy of the Silurian beds in the NEI; adapted from Clarkson and Taylor (2002) and Molyneux et al. (2008) and taking into account the revised thickness of the Deerhope Formation suggested by Anderson et al. (2007).

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FIGURE 2. 1-4: Fingala galea Lamont, 1978, from locality R260, Deerhope Burn, lower part of the Wether Law Linn Formation; 1, 2: top and side views of specimen NMS G.1876.42.71.1 from the Henderson Collection; 3: posterior view of the shell showing in detail the ‘protoconch’ as shown in Lamont, pl. 25, fig. 3; 4: handwritten label associated with the specimen. 5, 8, 9: Pterotheca gath Lamont, 1978, from locality R83, Wether Law Linn Formation. 5: dorsal view of specimen NMS G.1897.32.746 from the Hardie Collection; 8, 9: view of the sample including the label written by A. Lamont and dorsal view of specimen NMS G.1995.66.1. 6, 7: Bucaniopsis expansa var. galaensis Lamont, 1978, from the Deerhope Burn; 6: adapertural view of specimen NMS G.1876.42.72.1 from the Henderson Collection; 7: handwritten label associated with the specimen (left hand side). Scale bars: 10 mm (figures 1, 2, 5, 8, 9); 5 mm (figure 6) ; 1 mm (figure 3).

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FIGURE 3. 1, 2: Bellerophon kentigerni Lamont, 1978, from the North Esk Inlier (exact locality unknown, Deerhope Burn or Wether Law Linn); 1: apertural view of specimen NMS G.1982.20.5 from the Lamont Collection; 2: handwritten label associated with the specimen. 3-5: Platyceras (Acroculia?) antiquata Salter, 1861, from locality R260 of the Deerhope Burn; 3, 4: side view of a single whorl of specimen NMS G.1876.42.69 from the Henderson Collection; note that the specimen is glued onto its label (4); 5: handwritten label associated with the specimen; 6-8: Cuchulain lugi Lamont, 1978, from the Deerhope Burn (?), Deerhope Formation; 6: handwritten label associated with the specimen; 7, 8: view of part and counterpart, and close-up of the internal mould of specimen NMS G.1979.77.34. Scale bars: 10 mm (figures 1, 7); 5 mm (figure 8); 1 mm (figure 3).

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FIGURE 4. 1-5: Cyrtolites (Balsillia) limbus Lamont, 1978, from the Deerhope Burn; 1: side view of specimen NMS G.1876.42.72.2 from the Henderson Collection; 2: handwritten label associated with the specimen (right hand side); 3-5: handwritten labels discussing the possible affinity of the specimen (see Lamont 1978, page 247) - note that the information on some labels is crossed out by Lamont. 6-9: Phanerotrema tomkeieffi Lamont, 1978, from the Deerhope Burn; 6: side view of specimen NMS G.1876.42.58.1 from the Henderson Collection; 7-9: handwritten labels associated with the specimen. Scale bars: 5 mm (figures 1, 6).

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FIGURE 5. 1-4: Eckfordius scoticus Lamont, 1978, from the Deerhope Burn, Deerhope Formation; 1: side view of specimen NMS G. 1982.20.4 from the Henderson Collection; 2-4: handwritten labels associated with the specimen. 5-7: Gyronema cuthberti Lamont, 1978, from the Deerhope Burn; 5: side view of specimen NMS G.1982.20.2 from the Lamont Collection; 6, 7: handwritten labels associated with the specimen - note the specimen is glued to the label as it is often the case with collections acquired from Lamont. Scale bars: 5 mm (figures 1, 5).

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FIGURE 6. 1-3: Euryzone? millsi Lamont, 1978, from the Deerhope Burn; 1, 2: side view of possibly the last whorl (possibly apertural view, although the aperture is not preserved) of specimen NMS G.1982.20.1 from the Lamont Collection - note the specimen is glued to the label; 3: handwritten label associated with the specimen. 4-6: Annerlia crinolin Lamont, 1978, from the Deerhope Burn; 4, 6: handwritten labels associated with the specimen - image 6 shows the back of the label on which the specimen was glued; 5: External mould of the side view of specimen NMS G.1876.42.60 from the Henderson Collection. 7-9: Platyceras (Acroculia?) antiquata Salter, 1861, from locality R82, Wether Law Linn Formation; 7, 9: adapertural views of specimen NMS G.1897.32.725 from the Hardie Collection - note “Deerhope Pentland” is engraved on the matrix (image 7); 8: handwritten label associated with the specimen. Scale bars: 10 mm (figures 7, 9); 5 mm (figure 5); 2 mm (figure 1).

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FIGURE 7. 1, 4, 5: Hormotoma ahania Lamont, 1978, from the Deerhope Burn or possibly locality R98, Henshaw Burn, Wether Law Linn Formation; 1: side view of specimen NMS G.1876.42.64 from the Henderson Collection; 4, 5: handwritten labels associated with the specimen. 2: Hormotoma henshawi Lamont, 1978, from the Henshaw Burn, Wether Law Linn Formation, side view of specimen BGS GSE 10707. 3, 6, 10, 11: Chambersius zonatus Lamont, 1978, from the Deerhope Burn; 3, 6: possibly apertural view of specimen NMS G. 1876.42.64 from the Henderson Collection - note the specimen is glued onto a label (image 5); 10, 11: handwritten labels associated with the specimen. 7-9: Oithonaconcha macphersoni Lamont, 1978, from the Deerhope Burn, or possibly locality R98, Henshaw Burn, Wether Law Linn Formation; 7: side view of specimen NMS G.1876.42.62.1 from the Henderson Collection; 8, 9: handwritten labels with information regarding the specimen. Scale bars: 5 mm (figures 1, 2); 2.5 mm (figures 3, 7).

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FIGURE 8. 1, 2: Polytropina splad Lamont, 1978, from the Deerhope Burn; 1: specimen NMS G.1982.20.3 from the Lamont Collection (figured on plate XXVII, figures 1, 2); 2: handwritten label glued on and associated with the specimen. 3-9: Oriostoma polymetis Lamont, 1978, from the Deerhope Burn, NMS G. 1876.42.59 from the Henderson Collection; 3-5: apical and side views of juvenile specimen (figured as plate XXVII, figure 5); 6-7: apical and umbilical views of mature specimen (figured on plate XXVII, figures 6, 7); 8: detail of ornaments on external moulds (figured on plate XXVII, figure 8); 9: handwritten label associated with the specimen, locality, and publication reference. Scale bars: 5 mm (figures 1, 3, 4, 6, 7); 2.5 mm (figures 5, 8).

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FIGURE 9. 1-2: Oriostoma polymetis Lamont, 1978, from the Deerhope Burn, NMS G. 1876.42.59 from the Henderson Collection; 1: detail of ornaments on external moulds (figured on plate XXVII, figure 9); 2: handwritten label discussing the possible affinities of the specimen - label reading “...possibly a form representing an ancestor of E. cf. discors, but differing mainly in the very numerous keels which are nearly as abundant on the base in the upper side of the whorls...”. 3, 5: MacColla arcana Lamont, 1978, from the Deerhope Burn, locality R260, Wether Law Linn Formation; 3: handwritten label associated with the specimen; 5: specimen NMS G.1979.77.2 from the Lamont Collection (figured on plate XXVII, figures 10, 11). 4, 6, 8: Euomphalopterus zigzag Lamont, 1978, from the Deerhope Burn, locality R260, Wether Law Linn Formation; 4, 6: specimen NMS G.1977.77.1 from the Lamont Collection, mould of umbilicus and shell, and detail of ornament (figured on plate XVII, figures 12-13); 8: handwritten label associated with the specimen. 7, 9, 10: Muirheada simulans (Salter, 1861) from possibly locality R98 (described by Lamont, 1978, as “NW side Wether Law Linn, above Deerhope horisons” [sic], page 288), upper part of the Wether Law Linn Formation; recorded as specimens NMS G.1876.42.68 from the Henderson Collection; 7: handwritten label referring to the specimens; specimen on figure 9 is figured by Lamont on plate XXVII, figure 14; specimens on figure 10 are figured by Lamont on plate XXVII, figures 15, 16. Scale bars: 5 mm (figures 4, 9, 10); 2.5 mm (figure 1); 2 mm (figures 5, 6).

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FIGURE 10. 1-5: Metaconularia sowerbyi var. galaensis Lamont, 1978; 1: specimen NMS G.1876.42.73.1 figured by Lamont on plate XXVII figure 17; 4: specimen NMS G.1876.42.73.2 figured by Lamont on plate XXVII, figure 18; 2, 3, 5: handwritten labels referring to the specimens. Specimens figured from the Henderson Collection. 6-9: Conularia chevron Lamont, 1978, from the Wether Law Linn; 6-8: specimen NMS G.1979.77.14 from the Lamont Collection, showing specimen glued on label (6), close-up of specimen (7) that is figured by Lamont on plate XXVII, figure 19, and reverse of label (8) shown on figure 6; 9: handwritten label with details of the specimen. 10, 11: Crockettius aboriginis Lamont, 1978, from the Deerhope Burn, possibly locality R98; 10: handwritten label with details of the specimen (genus name misspelled); 11: specimen NMS G.1979.77.15 glued on handwritten label (genus name misspelled), figured by Lamont on plate XXVII, figure 20. Scale bars: 5 mm (figures 1, 4, 6); 2.5 mm (figures 7, 11).

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FIGURE 11. 1, 2: Anadontopsis cf. salteri from locality R82, Wether Law Linn Formation; 1: handwritten label (author unknown) with addendum (red ink) by A. Lamont - specimen referred to as number 8 on the label; 2: specimen NMS G.1979.45.4 from the Lamont Collection. 3: Chantrakionoceras scoticum Lamont, 1978, possibly from locality R98 (same locality as Muirheada simulans), upper part of the Wether Law Linn Formation; specimen NMS G.1876.42.68 from the Henderson Collection, figured by Lamont on plate XXVII, figure 22. Holland (2000) noted that the longitudinal ornament is placed across the page; the specimen’s orientation is reproduced here as in Lamont’s plate. 4, 5: Pitcairniellus rebel Lamont, 1978, from the Deerhope Burn; 4: specimen NMS G.1979.77.3 from the Lamont Collection, figured by Lamont on plate XVIII, figure 1; 5: handwritten label with information related to specimen. 6, 7: Ctenodonta cf. obesa Salter, 1861, from the Deerhope Burn; 6: handwritten label with information related to specimen; 7: specimen NMS G.1979.77.4 from the Lamont Collection, figured by Lamont on plate XXVIII, figure 2. Scale bars: 5 mm (figure 1), 2.5 mm (figures 3, 4, 7).

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FIGURE 12. 1, 3: Tearlach trippi Lamont, 1978, from possibly locality R245 along the Deerhope Burn, Deerhope Formation; 1: specimen NMS G.1979.77.5 from the Lamont Collection, figured by Lamont on plate XXVIII, figure 4; 3: handwritten label with information on the specimen. 2, 4: Cuneamya neilmunro Lamont, 1978, from the Deerhope Burn, Deerhope Formation; 2: handwritten label with information on the specimen; 4: specimen NMS G.1979.77.8 from the Lamont Collection, figured by Lamont on plate XXVIII, figure 5. 5, 6: Orthonota dulcibella Lamont, 1978, from locality R82, Wether Law Linn Formation; 5: specimen NMS G.1979.77.9 from the Lamont Collection, figured by Lamont on plate XXVIII, figure 6; 6: handwritten label detailing the locality. 7, 8: Orthonota gentilis (Salter, 1861) from the Deerhope Formation; 7: handwritten label with information related to the specimen; 8: specimen NMS G.1979.77.10 from the Lamont Collection, figured by Lamont (1978) on plate XXVIII, figure 7. Scale bars: 2.5 mm (figures 1, 4, 8); 1 mm (figure 5).

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FIGURE 13. 1, 2: Scotokionoceras naxa Lamont, 1978, from the Deerhope Burn, Deerhope Formation; 1: handwritten label with information regarding the specimen; 2: specimen NMS G.1979.77.11 from the Lamont Collection, figured by Lamont on plate XXVIII, figure 9. 3, 6: Orthoceras (Pictorthoceras) humilis Lamont, 1978, from the Deerhope Burn, Deerhope Formation; 3: specimen NMS G.1979.77.13 from the Lamont Collection, figured by Lamont on plate XXVIII, figure 10; 6: handwritten label with details on the specimen. 4, 5, 7: Hyolithes adamas Lamont, 1978, from the Deerhope Burn, Deerhope Formation; 4, 5: front and reverse views of specimen NMS G.1979.77.16 from the Lamont Collection, figured by Lamont on plate XXVIII, figures 11, 12; 7: handwritten label with details on the specimen. Scale bars: 2.5 mm (figures 2-5).

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FIGURE 14. 1-8: Plumulites ruskini Lamont, 1978, from locality R82, Wether Law Linn Formation; 1, 2: specimen NMS G. 1979.77.17 (part and counterpart), figured by Lamont on plate XXVIII, figure 13; 3: specimen NMS G.1979.77.18, figured by Lamont on plate XXVIII, figure 14; 4: specimen NMS G.1979.77.19, figured by Lamont on plate XXVIII, figure 15; 5: handwritten label; 6: specimen NMS G.1979.77.20, figured by Lamont on plate XXVIII, figure 16; 7: specimen NMS G.1979.77.21, figured by Lamont on plate XXVIII, figure 17; 8: specimen NMS G.1979.77.22, not figured by Lamont. All specimens from the Lamont Collection, possibly re-registered from NMS G.1876.42.8 (Henderson Collection). Scale bars: 1 mm (figures 1-4, 6-8).

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FIGURE 15. 1, 2: Polygrammoceras (Flettoceras) filibeg Lamont, 1978, from the Wether Law Linn, Wether Law Linn Formation; specimen NMS G.1979.77.12 from the Lamont Collection, figured by Lamont on plate XXIX, figure 10, showing view of the sample (including handwritten label) (1), and close-up of the specimen (2). 3, 5: McCallienellus catherinae Lamont, 1978, from the Wether Law Linn, Wether Law Linn Formation; 3: specimen NMS G.1979.77.36.2 from the Lamont Collection, figured by Lamont on plate XXIX, figure 11; 5: handwritten label with taxonomic name misspelled. 4, 5: Learmontella epicyclica Lamont, 1978, from the Wether Law Linn, Wether Law Linn Formation; 4: specimen NMS G.1979.77.36.3 from the Lamont Collection, figured by Lamont on plate XXIX, figure 12; 5: handwritten label. 6-11: Proetus (Forbesia?) pitcairni Lamont, 1978, from the Deerhope Burn (possibly R260), Wether Law Linn Formation; all specimens from the Lamont Collection; 6, 8: specimen NMS G.1979.77.24, figured by Lamont on plate XXX, figure 2, and label with specimen glued; 7: handwritten label with information related to the specimens; 9: specimen NMS G.1979.77.25, figured by Lamont on plate XXX, figure 3; 10: specimen NMS G.1979.77.23, figured by Lamont on plate XXX, figure 1; 11: specimen NMS G.1979.77.26, figured by Lamont on plate XXX, figure 4. Scale bars: 5 mm (figures 1, 2); 2 mm (figures 8-11); 1 mm (figure 6); 0.5 mm (figures 3, 4).

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FIGURE 16. 1-3: Proetus (Scotoproetus) fergali Lamont, 1978, from the Wether Law Linn (possibly R265), Wether Law Linn Formation; 1, 2: handwritten labels with information on the specimen; 3: specimen NMS G.1979.77.27 from the Lamont Collection, figured by Lamont on plate XXX, figure 5. 4, 5, 7: Cyphoproetus (Carlopsia) glaudii Lamont, 1948; 4: specimen NMS G.1979.45.4 from locality R82, Wether Law Linn Formation, figured by Lamont on plate XXX, figure 6; this specimen is referred to on a label reproduced here on Figure 11.1 (#3 on the list shown); 5, 7: specimen NMS G.1979.77.31 (Lamont Collection) from the Deerhope Burn (possibly R260), Wether Law Linn Formation, glued to a handwritten label, and close-up of the hypostome, figured by Lamont on plate XXX, figure 7. 6, 8: Proetus (Cornuproetus) dicuili Lamont, 1978, from the Deerhope Formation (possibly R260), Wether Law Linn Formation; 6: handwritten label with information on the specimen; 8: specimens NMS G.1979.77.29 (pygidium) and NMS G.1979.77.30 (free cheek), figured by Lamont on plate XXX, figures 9 and 10; both specimens from the Lamont Collection. Scale bars: 5 mm (figures 2, 5); 2 mm (figures 4, 7, 8); 1 mm (figure 3).

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FIGURE 17. 1, 2: Cyphoproetus cf. punctillosus (Lindström, 1885) from the Deerhope Burn; 1: handwritten label with publication details; 2: specimen NMS G.1979.77.32, figured by Lamont on plate XXX, figure 11. 3, 4: Cyphoproetus (Otademus) alacer Lamont, 1978, from the Deerhope Burn, Deerhope Coral Beds, Deerhope Formation; 3: handwritten label with horizon noted as “Gutterford Burn Flagstones with Chonetes ”, and age noted as Lamont’s “Lower Pentlandian”; 4: specimen NMS G.1979.77.33 from the Lamont Collection, figured by Lamont on plate XXX, figure 12. 5-7: Praedechenella peeblesi (Lamont, 1948) from the Deerhope Burn, possibly Wether Law Linn Formation; 5: specimen NMS G.1979.45.3, figured by Lamont on plate XXX, figure 13; 6, 7: handwritten labels with details related to the specimen. 8-11: Youngia douglasii (Lamont, 1948) from the Deerhope Burn, possibly the lower part of the Wether Law Linn Formation; 10, 11: dorsal and side views of specimen NMS G.1979.77.38 from the Lamont Collection, figured by Lamont on plate XXX, figures 14 and 16; 8: handwritten label with information on the specimens; 9: specimen NMS G.1979.77.39 from the Lamont Collection, figured by Lamont on plate XXX, figure 15. Scale bars: 2 mm (figures 4, 5, 9); 1 mm (figures 2, 10, 11).

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FIGURE 18. 1, 2: Hemiarges hendersoni (Lamont, 1948) from the Deerhope Burn, possibly the upper part of the Deerhope Formation; 1: specimen NMS G.1979.45.2, figured by Lamont on plate XXX, figures 17, 18; 2: handwritten label with information on the specimen. 3-5: Bruxaspis dealgach (Lamont, 1978) from the Deerhope Burn; 3: handwritten label with information on the specimens; 4, 5: specimen NMS G.1979.77.45.2 (cephalon, (4)) and specimen NMS G.1979.77.45.1 (pygidium (5)) from the Lamont Collection, figured by Lamont on plate XXX, figures 19 and 20. 6: Dudleyaspis lothiana (Lamont, 1948) from the Bavelaw Inlier, possibly from a small quarry near Bavelaw Castle, horizon unspecified; specimen from the British Geological Survey collection GSE14487, a latex cast is reproduced by Lamont on plate XXX, fig. 21. Image BGS © UKRI 2018 reproduced with the kind permission of the British Geological Survey, Photo P835160 from GB3D Website, http://www.3d-fossils.ac.uk/tou.html, released under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (http://creativecommons.org/licences/by-nc-sa/3.0/). 7-10: Aytounella scotica Lamont, 1978, from the Deerhope Burn, Wether Law Lin Formation; specimen NMS G.1979.77.37, external mould of the glabella (7) as figured on plate XXXI, figure 1, and view of the handwritten label (8) glued onto the sample; 9, 10: handwritten label (recto and verso) discussing the affinity of the species. Scale bars: 10 mm (figure 8); 2 mm (figures 1, 4, 6); 1 mm (figures 5, 7).

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FIGURE 19. 1, 2: Acernaspis (Eskaspis) cf. sufferta (Lamont, 1948) from the Deerhope Burn, lower part of the Wether Law Linn Formation; 1: handwritten label with information on the specimen; 2: part of cephalon of specimen NMS G.1979.77.35 from the Lamont Collection, figured by Lamont on plate XXXI, figure 2. 3, 4: Acernaspis (Eskaspis) phylax Lamont, 1978, from the Wether Law Linn, Wether Law Linn Formation; 3: specimen NMS G.1979.77.36.1 from the Lamont Collection, figured by Lamont on plate XXXI, figures 3, 4; 4: handwritten label describing the specimen, with information for other specimens. 5-7: Mirmor andreae Lamont, 1978, from the Gutterford Burn, lowest Deerhope Formation; 5, 7: handwritten labels with information on the specimen; 6: handwritten label with a note of the locality “Gutterford Burn”, on the reverse of specimen NMS G.2001.100.4. Scale bars: 2.5 mm (figure 3); 2 mm (figure 2).

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FIGURE 20. 1-4: Mirmor andreae Lamont, 1978, from the Gutterford Burn, lowest Deerhope Formation; specimen NMS G.1979.45.1, original external mould (1), the latex cast of this specimen is figured by Lamont on plate XXXII, figure 1, and counterpart (3) registered as NMS G.2001.100.4; 2, 4: handwritten labels with information on the specimen. 5-8: Scotoharpes domina Lamont, 1948, from the Henshaw Burn (possibly R98), Wether Law Linn Formation; 5, 8: close-up of handwritten label (5) glued on specimen NMS G.1978.61.547 (image 8), which was not figured in Lamont (1978); 6, 7: close-up of cephalon (part and counterpart). 9: Taitia catena Crookall, 1930, from the Gutterford Burn, lowest Deerhope Formation; specimen NMS G.1979.45.1, near bottom right of Mirmor andraea on Figure 20.1; Figures 20.2 and 20.4 relate also to this species. Scale bars: 10 mm (figures 1, 3, 8); 5 mm (figures 6, 7); 2 mm (figure 9).

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