Fig. 1 in Ordovician polychaeturid polychaetes: Taxonomy, distribution and palaeoecology

Fig. 1. Elements of jaw apparatuses of Ordovician polychaeturid polychaete Pteropelta gladiata Eisenack, 1939. A–I. Left MI, all in dorsal view. A. GIT 592−34, sample OM97−5, Väike−Pakri Cliff, Estonia, Kunda Stage, Darriwilian. B. GIT 592−35, sample OM97−20, Väike−Pakri Cliff, Estonia, Uhaku Stage, Darriwilian. C. GIT 592−36, sample OM03−51, Viru Mine, Estonia, Kukruse Stage, Sandbian. D. GIT 433−24, sample OM03−51, Viru Mine, Estonia, Kukruse Stage, Sandbian. E. GIT 592−37, sample OM97−116, Väike−Pakri Island, Estonia, Kukruse Stage, Sandbian. F. GIT 592−38, sample OM−205, Vaemla F−364 borehole, 140 m, Estonia, Keila Stage, Sandbian. G. GIT 592−39, sample M96−81, Orjaku borehole, 112.5 m, Estonia, Rakvere Stage, Katian. H. GIT 592−40, sample M96−1, Laeva 18 borehole, 187.45 m, Estonia, Pirgu Stage, Katian. I. LO 10476, sample 04E1−3, Stormyr−2 borehole, 213.65 m, Sweden, Pirgu Stage, Katian. J–Q. Right MI, all in dorsal view. J. GIT 433−25, sample OM03−51, Viru Mine, Estonia, Kukruse Stage, Sandbian, magnified (J1) and reduced to the same scale as O, to show size variation (J2). K. GIT 592−41, sample OM03−51, Viru Mine, Estonia, Kukruse Stage, Sandbian. L. GIT 592−42, sample OM−205, Vaemla F−364 borehole, 140 m, Estonia, Keila Stage, Sandbian. M. GIT 592−43, sample M96−49, Orjaku borehole, 47.62 m, Estonia, Pirgu Stage, Katian. N. GIT 592−44, sample M96−49, Orjaku borehole, 47.62 m, Estonia, Pirgu Stage, Katian. O. GIT 592−45, sample D−102/22, Lelle D−102 borehole, 141.42 m, Estonia, Pirgu Stage, Katian. P. GIT 592−46, sample D−102/49, Lelle D−102 borehole, 146.18 m, Estonia, Vormsi Stage, Katian. Q. LO 10477, sample 04E1−3, Stormyr−2 borehole, 213.65 m, Sweden, Pirgu Stage, Katian. R. Left MI, ventral view, GIT 592−47, sample OM97−5, Väike−Pakri Cliff, Estonia, Kunda Stage, Darriwilian. S. Left MI, left lateral view, GIT 592−48, sample M96−81, Orjaku borehole, 112.5 m, Estonia, Rakvere Stage, Katian. T. Right MI, right lateral view, GIT 592−49, sample M96−81, Orjaku borehole, 112.5 m, Estonia, Rakvere Stage, Katian. U. Apparatus, GIT 592−50, sample M−4711, Suhkrumägi outcrop, Estonia, Kunda Stage, Darriwilian. V. Apparatus, GIT 592−51, sample M−4430, Orjaku borehole, 135.6 m, Estonia, Keila Stage, Sandbian/Katian. W. Basal plate, GIT 592−52, sample M−4711, Suhkrumägi outcrop, Estonia, Kunda Stage, Darriwilian. X. Carriers, GIT 315−34, sample M96−77, Orjaku borehole, 63.8 m, Estonia, Pirgu Stage, Katian. Y. Carriers, GIT 592−53, sample M96−49, Orjaku borehole, 47.62 m, Estonia, Pirgu Stage, Katian. SEM micrographs, scale bars 100 µm.