Zemes un vides zinātnes Earth and Environment Sciences - Latvijas ...
Zemes un vides zinātnes Earth and Environment Sciences - Latvijas ... Zemes un vides zinātnes Earth and Environment Sciences - Latvijas ...
48 ADVANCES IN PALAEOICHTHYOLOGY Fig. 1A-Z. Trimpleylepis juncta gen. et sp. nov. SEM pictures of fragments of scales and (?)platelets from Man Brook, upper part of Prídolí Series, Upper Silurian. All scale bars are 0.2 mm. A-C, holotype, scale NHM P 65593: A, external; B, visceral; C, close up of sculpture. D-F, scale NHM P 65601: D, external; E, visceral; F, close up of sculpture. G-H, scale NHM P 65594: G, external; H, visceral. I-K, scale NHM P 65597: I, visceral; J, external; K, close up of sculpture. L- M, scale NHM P 65600: L, external; M, cross section. N-P, scale NHM P 65595: N, visceral; O, external; P, close up of sculpture. Q- S, (?)platelet, NHM P 65612: Q, visceral; R, external; S, close up of sculpture. T-V, (?)platelet, NHM P 65604: T, visceral; U, external; V, close up of sculpture. W, scale NHM P 65606, external. X-Z, (?)platelet, NHM P 65602: X, external; Y, visceral; Z, close up of sculpture.
C.G.Miller, T. Marss, H. Blom. New anaspid material from Britain and Estonia 49 Diagnosis. Scales with a compact microstructure and well developed rounded to sub rounded tubercles joined by ridges parallel or sub-parallel to scale long axis; narrow to absent overlapped area. Trimpleylepis juncta gen. et sp. nov. Fig. 1; Figs 2A, C Etymology. Juncta in Latin meaning connected or joined, because sculptural tubercles are connected to each other by well developed ridges. Holotype. Figs 1A-C; scale NHM P 65593 from uppermost Prídolí, Upper Silurian, Man Brook, near Trimpley, Shropshire, U.K. Material. About 200 broken scales and platelets from Man Brook. Diagnosis. Scales with very narrow, smooth, anterior overlapped area which widens towards articulation processes; scales and (?)platelets with two to four rows of tubercles united with lower but well developed ridges. Vascular canals absent. Description. Black scales (Figs 1A-P, W) of variable width (600-1200 µm) with fragments of ends of scales (Fig. 1O) and middle parts preserved (Figs 1A, D, L). Anterior overlapped area of scales smooth and very narrow (generally
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C.G.Miller, T. Marss, H. Blom. New anaspid material from Britain <strong>and</strong> Estonia<br />
49<br />
Diagnosis. Scales with a compact microstructure <strong>and</strong> well developed ro<strong>un</strong>ded to sub<br />
ro<strong>un</strong>ded tubercles joined by ridges parallel or sub-parallel to scale long axis; narrow to<br />
absent overlapped area.<br />
Trimpleylepis j<strong>un</strong>cta gen. et sp. nov.<br />
Fig. 1; Figs 2A, C<br />
Etymology. J<strong>un</strong>cta in Latin meaning connected or joined, because sculptural tubercles<br />
are connected to each other by well developed ridges.<br />
Holotype. Figs 1A-C; scale NHM P 65593 from uppermost Prídolí, Upper Silurian,<br />
Man Brook, near Trimpley, Shropshire, U.K.<br />
Material. About 200 broken scales <strong>and</strong> platelets from Man Brook.<br />
Diagnosis. Scales with very narrow, smooth, anterior overlapped area which widens<br />
towards articulation processes; scales <strong>and</strong> (?)platelets with two to four rows of tubercles<br />
<strong>un</strong>ited with lower but well developed ridges. Vascular canals absent.<br />
Description. Black scales (Figs 1A-P, W) of variable width (600-1200 µm) with<br />
fragments of ends of scales (Fig. 1O) <strong>and</strong> middle parts preserved (Figs 1A, D, L).<br />
Anterior overlapped area of scales smooth <strong>and</strong> very narrow (generally
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