Martiniinae, Waagen, 1883

Carniti, Alessandro P., Porta, Giovanna Della, Banks, Vanessa J., Stephenson, Michael H. & Angiolini, Lucia, 2022, Brachiopod fauna from uppermost Visean (Mississippian) mud mounds in Derbyshire, UK, Acta Palaeontologica Polonica 67 (4), pp. 865-915 : 903

Martiniinae gen. et sp. indet.

Fig. 14N, O .

Material.— Two ventral valves: MPUM12065 ( RCC2- 58 a); MPUM12066 (WI1-32) from mud mound complex of Ricklow Quarry , Monyash , Derbyshire, UK, Monsal Dale Limestone Formation , Brigantian (RCC-, RCK-), and Wensley Dale , Matlock , Derbyshire, UK, Eyam Limestone Formation , upper Brigantian, upper Visean (WI1) .

Description.—Small shell with suboval outline; maximum width at shell mid-length. Anterior commissure uniplicate. Shallow, rounded sulcus develops at 10.0 mm from the umbo, extending into a tongue anteriorly. Few growth lamellae and growth lines. Ventral adminicula and septum absent.

Remarks.—The specimens are attributed to the Martiniinae based on their concentric ornamentation, shallow sulcus and absence of ventral adminicula. They are left under open nomenclature due to their poor preservation.

Figures

Fig. 14. Rhynchonellida and Spiriferida from the Brigantian (uppermost Visean) of Ricklow Quarry, near Monyash (localities RCC-, RCK-; Fig. 3) and Wensley Dale, near Matlock (locality WI1; Fig. 2), Derbyshire, UK. A–G. Pleuropugnoides pleurodon (Phillips, 1836). A. MPUM12011 (RCC49-22) in dorsal (A1) and anterior (A2) views. B. MPUM12013 (RCK15-4) in ventral (B1) and dorsal (B2) views. C. MPUM12017 (RCK15B-3) in ventral (C1), dorsal (C2), and anterior (C3) views. D. MPUM12015 (RCK15-19) in ventral (D1) and dorsal (D2) view. E. MPUM12014 (RCK15-15) in lateral (E1), ventral (E2), and posterior (E3) views. F. MPUM12012 (RCC73-9) in lateral (F1), ventral (F2), posterior (F3), and anterior (F4) views. G. MPUM12016 RCK15-29) in ventral (G1), dorsal (G2), and anterior (G3) views. H–L. Propriopugnus pugnus (Martin, 1809).H. MPUM12021 (RCC2-55) in dorsal view.. MPUM12022 (RCC3-7) in dorsal (I1) and anterior (I2) views. J. MPUM12024 (RCC73-22b) in ventral (J1) and anterior (J2) views. K. MPUM12026 RCC60-4d) dorsal valve in dorsal view. L. MPUM12028 (WI1-33) in dorsal view. M.?Fusella sp., MPUM12037 (RCC128-5) ventral valve in ventral view. N, O. Martiniinae gen. et sp. indet. N. MPUM12065 (RCC2-58a) ventral valve in ventral view. O. MPUM12066 (WI1-32) ventral valve in ventral view.P–S. Angiospirifer bisulcatus (Sowerby, 1825). P. MPUM12032 (WI1-12a) in ventral view. Q. MPUM12035 (WI1-11) ventral valve in ventral view. R. MPUM12031 (WI1-10) in lateral (R1), dorsal (R2), ventral (R3), anterior (R4), and posterior (R5) views. S. MPUM12033 (WI1-30) in lateral (S1), dorsal S2), ventral (S3), anterior (S4), and posterior (S5) views. T–V. Latibrachythyris cf. crassa (De Koninck, 1843). T. MPUM12039 (RCC1-34a) ventral valve in ventral view. U. MPUM12038 (RCC1-21) ventral valve in ventral view. V. MPUM12041 (RCC54-17a) ventral valve in ventral (V1) and posterior (V2) views. Scale bars 10 mm.