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Figure 2 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 2. Thecidellina maxilla. (A–B) Scan of illustrations from HedleY (1899). (A) Illustration of a dorsal valve interior with tinY cardinal process. (B) Illustration of a ventral valve interior with tubercles on valve floor and long hemispondYlium prongs. (C) AM C.006202; SLR camera image of interior of dorsal valve with a wide, concave septum and small canopY spicules (note the missing valve posterior). (D) SLR camera image of interior of the ventral valve showing tuberculate valve floor and the posterior part of the dorsal valve still attached.
Figure 1 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 1. Map of published localities where material has been identified as Recent Thecidellina maxilla.
Figure 3 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 3. Thecidellina maxilla lectotYpe AM C.593654 (except C). (A) Ventral valve interior with tubercles. (B) Exterior of ventral valve with cementing surface underneath. (C) AM C.593657; exterior of ventral valve with cementing surface at posterior. (D) Close-up of cup-shaped hemispondYlium. (E) Exterior of dorsal valve. (F) Interior of dorsal valve with spicules over the brachial chamber and no calcitic connections between brachial bridge and intrabrachial ridge. (G) Lateral view of dorsal valve interior. (H) Close-up of tip of septum, marsupial orifices and ovarial notches. (I) Close-up of tubercles at base of septum and on anterior margin. (J) Posterior view of dorsal interior with calcitic pole attached to brachial bridge and base of cardinal process. Abbreviations: ci, cicatrix; cp, calcitic pole; mo, marsupial orifice; on, ovarial notch.
Fig. 9 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 9. Preservation (in situ) of brachiopods within massive to bedded barite blocks at Clipper Mine (Famennian, Nevada). A. Details of preservation showing costae and internal features such as the septalium and septum in sample above the scale bar. B. Typical block with dense, subparallel accumulation as seen by molds.
Fig. 5. A in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 5. A. The distribution of the Roberts Mountains Allochthon with key mines cited in this study. B. Stratigraphy of the Roberts Mountains Allochthon. Note exact position of Dzieduszyckia within the Slaven Chert is unknown due to intense faulting within the allochthon. Base map modified from Holm-Denoma et al. (2017). Stratigraphic chart based on Ketner (2013).
Fig. 8 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 8. Slaven brachiopod sediments in thin-section from Famennian, Nevada. A. Void of brachiopod shells surrounded by poikilotopic barite. Note that the barite has no preferred orientation to the shells. B. Intergrowth of coarse twinned calcite and subhedral barite. Use of retardation plate causes barite (ba) to show as bright colors against the calcite (c). C. Poor preservation of layered brachiopod shells within coarse calcite.
Fig. 6. A in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 6. A typical Slaven Chert exposed in open pit mines from Famennian, Nevada. A. Interbedded dark chert and light grey barite. Beds above fault approximately 10 cm thick. B. Exposure of in situ brachiopod molds in floor of Mountain Springs Mine (Pit A).
Fig. 11 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 11. External molds of dimerelloid brachiopod Dzieduszyckia spp., Famennian, Nevada, USA. A. USNM PAL 794576, block showing dense concentration of shells from in situ deposit, Mountain Springs Mine. B. USNM PAL 794577, cast showing typical triangular outline and deep sulcus. C. USNM PAL 794578, shell fragment showing relatively large costae and sulcus. D. USNM PAL 794579, specimen showing thinner costae and asymmetry about the midline. Note the rare bifurcation to left of midline. E. USMN PAL 794580, fragment of a more rounded shell with rounded costae. F. USNM PAL 794581, portion of shell showing radially divergent costae. G. USNM PAL 794582, external mold emphasizing strong biconvexity of shell.
Fig. 3 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 3. Field photograph showing two clearly distinguished dimerelloid brachiopod species, Dzieduszyckia tenuicostata (left) and Dzieduszyckia crassicostata (right), together in an allochthononous limestone boulder. Famennian (Upper Devonian), Sidi Amar, Western Meseta, Morocco.
Fig. 2. A in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 2. A. Global distribution of dimerelloid brachiopod Dzieduszyckia in a reconstruction of Late Devonian paleogeography. B. Map showing studied Famennian localities in Nevada, USA. Abbreviations: C, China; K, Kazakhstan; M, Morocco; N, Nevada; P, Poland; sU, Subpolar Urals; U, Urals; T, Tajikistan; X, Mexico. Inset shows localities noted in the text. Image based on data and concept in Baliński and Biernat (2003: fig. 1) who used the reconstruction of Golonka et al. (1994). The position of Tajikistan is not well constrained.
Fig. 13 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 13. Number of costae per width in centimeters of fragments in Dzieduszyckia sp. from Nevada. A. Histogram of data from all measured specimens. B. Best fit regression line assuming variance within a single species, in which costae frequency width skews toward lower values. C. Separation into two distinct species of brachiopods, with low (ca. 0.5 costa/mm) and high (ca. 1.0 costa/mm) median costae frequencies with best fit regression lines. Photos show one field sample with a representative of each group.
Fig. 1 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 1. Stratigraphic occurrences of dimerelloid brachiopod genera belonging to superfamily Dimerelloidea (Buckamn, 1918). Note that this arrangement is based solely on first appearance and does not imply evolutionary lineages. The Permian age of Rhynchonellina is based on Diener (1903) and Reed (1944).
Fig. 7 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 7. Measurements of shell features. FRAG, measured fossil is a fragment of a valve. MED, fragment of valve that retains the margin and sulcus and can be used to estimate minimum width.
Fig. 4 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 4. Stratigraphic distribution of dimerelloid brachiopod Dzieduszyckia within the Famennian (Upper Devonian) based on conodonts and ammonoids. Biozones based on the divisions of Spalletta et al. (2017), retaining the divisions on lower, middle, upper, and uppermost Famennian. See text for age references.
Fig. 10 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 10. δ13C isotopic ratios of limestone from Clipper Mine, Nevada compared to Mexico and Morocco (Famennian). Data from Batther 2020 and this study (Nevada); Canet et al. 2014 (Mexico); Peckmann et al. 2007 Morocco).
Fig. 12 in Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea
Fig. 12. Internal features of dimerelloid brachiopod Dzieduszyckia sp., Famennian, Nevada, USA. A. USNM PAL 794583, dorsal valve showing pronounced septum. B. USNM PAL 794584, internal mold of small shell showing deep septum and biconvex shell. C. USNM PAL 794585, view of hinge displaying septalium in upper, dorsal shell and vertical dental plates in lower, ventral shell. D. USNM PAL 794586, internal mold preserving relatively tall septalium. Scale bars 10 mm.
Fig. 17. Paterinid brachiopod Olenekotreta olenekensis Ushatinskaya, 1997 in Early-middle Cambrian stratigraphy and faunas from northern Siberia
Fig. 17. Paterinid brachiopod Olenekotreta olenekensis Ushatinskaya, 1997 from the middle Cambrian Kuonamka Formation, Bol'shaya Kuonamka River, Siberia, Russia; sample 8/17.6. A, C, E. Ventral valves, SMNH Br151259–151261, respectively. B, D, F. Dorsal valves, SMNH Br151262–151264, respectively. Scale bar: 500 µm (A–D) and 250 µm (E, F).
Fig. 15 in Brachiopod fauna from uppermost Visean (Mississippian) mud mounds in Derbyshire, UK
Fig. 15. SEM images of brachiopod specimens from the Brigantian (uppermost Visean) of Ricklow Quarry, near Monyash, Derbyshire, UK (localities RCC-, RCK-; Fig. 3). A. Pugnacid Pleuropugnoides pleurodon (Phillips, 1836), MPUM12013 (RCK15-4) in ventral view. B. Ambocoelid Crurithyris urei (Fleming, 1828), MPUM12030 (RCC42-25b) in ventral view. C. Gillediidid?Balanoconcha sp., MPUM12094 (RCC10-15a) in dorsal view. D, E. Cranaenidid Harttella oakleyi Brunton, 1982. D. MPUM12088 (RCC65G-13), serial section 1.0 mm from the umbo. E. MPUM12088 (RCC48-31), serial section 1.6 mm from the umbo. Detail showing absence of dental plates (D1, E1), focus showing Y-shaped septalium (D2, E2).
Fig. 12 in Brachiopod fauna from uppermost Visean (Mississippian) mud mounds in Derbyshire, UK
Fig. 12. Productidae and Echinoconchidae from the Brigantian (uppermost Visean) of Ricklow Quarry, near Monyash (localities RCC-, RCK-; see Fig. 3) and Wensley Dale, near Matlock (locality WI1; Fig. 2), Derbyshire, UK. A–C. Buxtonia scabricula (Sowerby, 1814). A. MPUM11963 (WI-40) in ventral view. B. MPUM11962 (WI1-38) in ventral (B1), dorsal (B2), and lateral (B3) views. C. MPUM11961 (WI1-14) in ventral (C1), dorsal (C2), and posterior (C3) views. D, E. Buxtonia sp. D. MPUM11968 (RCC8-2a) ventral valve in lateral (D1) and ventral (D2) views. E. MPUM11969 (WI1-2) ventral valve in ventral view. F. Buxtoniini gen. et sp. indet., MPUM11971 (RCK15B-1a) dorsal valve external cast. G–K. Echinoconchus punctatus (Sowerby, 1822). G. MPUM11983 (RCC1B-18) dorsal valve external cast. H. MPUM11980 (RCC54-7) ventral valve in ventral view. I. MPUM11975 (RCK15-21) in ventral view. J. MPUM11974 (RCC72-1) in ventral view. K. MPUM11977 (WI1-28) in lateral (K1), ventral (K2), dorsal (K3), and anterior (K4) views.
Fig. 11 in Brachiopod fauna from uppermost Visean (Mississippian) mud mounds in Derbyshire, UK
Fig. 11. Productidae from the Brigantian (uppermost Visean) of Ricklow Quarry, near Monyash, Derbyshire, UK (localities RCC-, RCK-; Fig. 3). A–F. Antiquatonia insculpta (Muir-Wood, 1928). A. MPUM11938 (RCC1B-9) in anterior (A1) and lateral (A2) views. B. MPUM11939 (RCC3-15a) in antero-ventral view. C. MPUM11940 (RCC42-26) in antero-ventral view. D. MPUM11941 (RCC110-1b) in lateral view. E. MPUM11944 (RCC2-25) ventral valve in ventral view. F. MPUM11947 (RCC128-2) dorsal valve interior and external cast. G, H. Dictyoclostus pinguis (Muir-Wood, 1928). G. MPUM11950 (RCC54-11) ventral valve in ventral view. H. MPUM11951 (RCK15-63a) dorsal valve external cast. I–K. Pugilis cf. kilbridensis (Muir-Wood, 1928). I. MPUM11956 (RCC128-3) dorsal valve interior and external cast. J. MPUM11955 (RCC54-4) ventral valve in anterior (J1) and lateral (J2) views. K. MPUM11954 (RCC2-47) ventral valve in anterior view. L. Pugilis cf. scotica (Sowerby, 1814), MPUM11958 (RCC2-41) in lateral (L1), ventral (L2), and anterior (L3) views. M, N. Buxtonia scabricula (Sowerby, 1814). M. MPUM11959 (RCC1B-13) in ventral view. N. MPUM11960 (RCC35A-11a) in ventral view.
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