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Fig. 4. A–C. The Lower Cretaceous heteromorph ammonite Crioceratites primitivus Reboulet, 1996 in Early Cretaceous ammonites and dinoflagellates from the Western Tatra Mountains, Poland

Fig. 4. A–C. The Lower Cretaceous heteromorph ammonite Crioceratites primitivus Reboulet, 1996 from the Kościeliska Marl Formation in the Lejowa Valley, Tatra Mountains, Poland. A. G/1728/MT. B. ZPAL Am. 25/2. C. ZPAL Am. 25/15. D. Distribution of anomiid individuals on a specimen of C. primitivus (ZPAL Am. 25/15). E–G. Close up views of bivalves attached to the body chambers of the ammonite C. primitivus (ZPAL Am. 25/15). All in lateral view.

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Рис. 2. Морфотипы Зрелых сперматоЗоидов (СЭМ) у Mytilus trossulus (A–G), Crenomytilus grayanus (H–L) и Mytilus coruscus (M–R): a – акросома; br – basal ring; n – Ядро; m – митохондриЯ; fl – Жгутик. Масштаб линейки – 1 мкм. in Study on sperm heteromorphism in some mussels (Bivalvia: Mytilidae) from the Sea of Japan

Рис. 2. Морфотипы Зрелых сперматоЗоидов (СЭМ) у Mytilus trossulus (A–G), Crenomytilus grayanus (H–L) и Mytilus coruscus (M–R): a – акросома; br – basal ring; n – Ядро; m – митохондриЯ; fl – Жгутик. Масштаб линейки – 1 мкм.

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Fig. 2 in Study on sperm heteromorphism in some mussels (Bivalvia: Mytilidae) from the Sea of Japan

Fig. 2. Morphotypes of mature spermatozoa (SEM) in Mytilus trossulus (A–G), Crenomytilus grayanus (H–L) and Mytilus coruscus (M–R): a – acrosome; br – basal ring; n – nucleus; m – mitochondrion; fl – flagellum. Scale bar 1 µm.

Fig. 2 in The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxonomy and evolutionary implications

Fig. 2. Dimensions and terms used in Dissimilites intermedius sp. nov. from Puez, based on the holotype, the most entire specimen (NHMW 2012/0002/0001). α, angle of retroversum; β, angle formed by pro- and retroversum; γ, open angle on inner side of proversum; δ, angle at end of proversum.

Fig. 7 in The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxonomy and evolutionary implications

Fig. 7. Paleogeographical map of the Mediterranean area during the Early Barremian based on Dercourt et al. (1993) and Barrier and Vrielynck 2008). Numbers correspond to Fig. 5 and indicate localities of Dissimilites occurrences. Yellow spot shows locality of Puez, other localities are in black. 1–3, Puez; 4, Morocco; 5, Spain; 6–14, France; 15–19, Italy; 20, 21, Slovakia; 22, 23, Hungary; 24–27 Romania; 28, 29, Bulgaria; 30, Japan.

Fig. 1 in The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxonomy and evolutionary implications

Fig. 1. Locality maps of the study area. A. Location of South Tyrol in northern Italy and Puez area (black star) and neighbouring La Stua section white star) within the Dolomites. B. Position of the Puez and La Stua localities on the Trento Plateau.

Fig. 5 in The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxonomy and evolutionary implications

Fig. 5. Ranges of ancyloceratid ammonoids occurring in the Puez sections (P1 and P7) with indicated biostratigraphic ammonite zonation from Upper Hauterivian and Barremian. Distribution and range of Dissimilites species from Puez and all known occurrences worldwide. 1, this paper; 2, Lukeneder 2012; 3, Lukeneder and Aspmair 2006; 4, Company et al. 2008; 5, Company et al. 1995; 6, Vermeulen, 2005; 2006; 7, Vermeulen 1995, 1998; Ebbo et al. 2000; 8, Ebbo et al. 2000; 9, Busnardo 1963; 10, d'Orbigny 1842, 1852; Busnardo 2006; 11, Kilian 1910; 12, Vermeulen 2009; 13, Bert 2009; 14, Bert et al. 2010; 15, Uhlig 1887; 16, Haug 1887; 17, Haug 1889; 18, Stöhr 1993; 19, Cecca and Pallini 1994; 20, Uhlig 1883; 21, Vašíček 2006; 22, Nagy 1967; 23, Fülöp 1960; Fözy and Janssen 2009; 24, Simionescu 1998; 25, Avram 1976; 26, Avram 1994; 27, Avram 2001; 28, Breskovski 1966, 1975; 29, Dimitrova 1967; 30, Obata and Matsukawa 2007. Note indicated biostratigraphic ammonite zonation. Ammonite occurrences and ranges are marked by solid black circles. Bold horizontal line, stage boundary; dashed horizontal lines, zonal boundaries; dotted horizontal lines, subzonal boundaries. Taxonomic abbreviations: Ps., Pseudothurmannia; T., Taveraidiscus; K., Kotetishvilia; N., Nicklesia; hu., hugii; nic., nicklesi; pul., pulchella; com., compressissima.

Fig. 67 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 67. Suture of Solenoceras elegans, n. sp. E is the external lobe, L is the lateral lobe, U is the umbilical lobe, and I is the internal lobe. The heavy, straight line marks the middle of the venter. USNM 482825, USGS Mesozoic locality D1387 (fig. 2, loc. 27).

Fig. 63 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 63. Restoration of most of a Solenoceras larimerense, n. sp. Stipple board drawing by John R. Stacy. Figure is ×4.

Fig. 53 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 53. Histogram showing range in diameters of the elbows of 48 specimens of Oxybeloceras crassum (Whitfield, 1877), USGS Mesozoic localities D251, D358, D359, D454, D735, D1364, and D4332.

Fig. 60 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 60. Part of the suture of Solenoceras bearpawense, n. sp. E is the external lobe and L is the lateral lobe. The heavy, straight line marks the middle of the venter. USNM 482513, USGS Mesozoic locality D2629 (fig. 2, loc. 3).

Fig. 56 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 56. Restoration of Spiroxybeloceras meekanum (Whitfield, 1877). Stipple board drawing by John R. Stacy. Figure is ×2.

Fig. 52 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 52. Part of the fifth from last suture of Oxybeloceras crassum (Whitfield, 1877). USNM 482502, USGS Mesozoic locality D2837 (fig. 2, loc. 40). E is the external lobe, L is the lateral lobe, and the heavy straight line marks the middle of the venter.

Fig. 47 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 47. Exiteloceras jenneyi jenneyi (Whitfield, 1877). A. USNM 482487, USGS Mesozoic locality D304 (fig. 2, loc. 35). B, C. Private collection of the late Karl F. Hirsch, Denver, Colo., Pierre Shale of the Pueblo area, Colo. Figures are ×1.

Fig. 50. A, B. Exiteloceras jenneyi camacki, n. subsp. Paratype, USNM 482495, USGS Mesozoic locality D13525 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 50. A, B. Exiteloceras jenneyi camacki, n. subsp. Paratype, USNM 482495, USGS Mesozoic locality D13525 (fig. 2, loc. 22). Figures are ×1.

Fig. 45 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 45. Exiteloceras jenneyi jenneyi (Whitfield, 1877). A. USNM 482484, USGS Mesozoic locality D304 (fig. 2, loc. 35). B. USNM 482485, same locality. Figures are ×1.

Fig. 44. A C in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 44. A C. Exiteloceras jenneyi jenneyi (Whitfield, 1877). A. USNM 482473, USGS Mesozoic locality D304 (fig. 2, loc. 35). B. USNM 482483, USGS Mesozoic locality D1947 (fig. 2, loc. 19). C. Plaster cast of a specimen from the private collection of the late Karl F. Hirsch, Denver, Colo., Pierre Shale at Long Hollow north of Pueblo, Colo. D, E. Exiteloceras jenneyi camacki, n. subsp. Paratype, USNM 482494, USGS Mesozoic locality 1344 (fig. 2, loc. 60). Figures are ×1.

Fig. 41 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 41. Index map of part of the Western Interior of the United States showing localities of Exiteloceras jenneyi (Whitfield, 1877). An x may represent one or several nearby localities. Numbers refer to USGS Mesozoic localities mentioned in the text. Dashed line marks the approximate western shoreline of the Western Interior Seaway during E. jenneyi zone time.

Fig. 42 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 42. Exiteloceras jenneyi jenneyi (Whitfield, 1877). A. USNM 482482, USGS Mesozoic locality D304 (fig. 2, loc. 35). B, C. USNM 12295, holotype, from ''limestone of the Fort Pierre Group, on the west side of Beaver Creek, southwest Black Hills'' (Whitfield, 1877: 40). Figures are ×1.

Fig. 39 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 39. Scatter diagram showing ratios of whorl breadth to whorl height of Exiteloceras jenneyi jenneyi (Whitfield, 1877), based on nine specimens from USGS Mesozoic locality D9651 (●), nine specimens from USGS Mesozoic locality D13451 (×), and the holotype (Δ) and of E. jenneyi camacki, n. subsp., based on 11 specimens from USGS Mesozoic localities D454, D851, D1232, D2619, D13448, and D13510 (O) and the holotype (+).