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527 results for “Mesozoic.”
FIG. 8 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 8. — Enoploclytia collignoni Secrétan, 1964 from the lower Campanian of Belo-sur-Tsiribihina,Menabe region, central Morondava Basin: A, near-complete specimen in ventral view (MNHN.F.A33132, Coupe de Bevaho, gisement 261) showing P1 with elongate chelae (note homochely), merus with strong spines on the ventral margin and a fragment of the cephalothorax; B, C, line drawings by F. Fogliazza, in dorsal and right lateral views,respectively. Abbreviations:a, branchiocardiac groove;b, antennal groove;b1, hepatic groove; c, postcervical groove; e1e, cervical groove; fa, fusiform area; i, inferior groove; rs, rostral spine.Scale bar: 2 cm. Photographs by C. Lemzaouda (MNHN).
FIG. 7 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 7. — Enoploclytia collignoni Secrétan, 1964 from the lower Campanian of Belo-sur-Tsiribihina, Menabe region, central Morondava Basin: A, B, holotype (MNHN.F.R03925, Coupe de Bevaho, gisement 256), isolated cephalothorax in dorsal and right lateral views, respectively; C, fragmentary chela of P1 (MNHN.F.R03924, Coupe de Bevaho, gisement 261), lateral view, note the straight occlusal margins of dactylus and index, with a single row of strong teeth; D, E, globose propodus (MNHN.F.R03914, Coupe de Berere III, gisement 192) covered by uniform pits and small tubercles on the outer surface (D) and by uniform pits with sparse, strong and aligned tubercles on the inner (E), note the articulation to the carpus; F, G, complete chela of P1 (MNHN.F.R03923, Coupe de Bevaho, gisement 261) with globose propodus retaining index (F, outer surface) and dactylus (G, inner surface) very narrow, elongate and curved distally. Scale bars: 2 cm. Photographs by C. Lemzaouda (MNHN).
FIG. 5 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 5. — Detail of the Central Morondava Basin with fossil-bearing outcrops. Type localities: 1, Ctenocheles madagascariensis; 2, C. madagascariensis and Caloxanthus simplex; 3, C. madagascariensis and Enoploclytia collignoni; 4, C. madagascariensis, Hoploparia pusilla, Notopocorystes australis, Schlueteria menabensis and "Xanthosia" robertsi; 5, C. madagascariensis, Linuparus bererensis and Notopocorystes denisae. Full species names are indicated in Table 1.
FIG. 2 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 2. — The Mahajanga Basin (Mahajanga Province) with fossil-bearing outcrops. Type localities: 1, Ctenocheles madagascariensis Secrétan, 1964; 2, Dromiopsis pulchella Secrétan, 1964; 3, Secretanella arcuata; 4, Hoploparia collignoni; 5, Notopocorystes bituberculatus; 6, Pustulina spinulata. Note that we do not show the type localities of H. sculpta and H. intermedia because Secrétan (1964) failed to designate holotypes for both species. Full species name are indicated in Table 1.
FIG. 3 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 3. — General map of the Morondava Basin (Tulear Province) subdivided into the three main sectors.
FIG. 25 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 25. — Reconstruction of Schlueteria menabensis Secrétan, 1964, by F. Fogliazza, right lateral view and detail of the inner surface of P1 chela.
FIG. 6 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 6. — Detail of the southern Morondava Basin with fossil-bearing outcrops. Type localities: 1,?Eryma australe; 2, Titanocarcinus mamillatus. Full species names are indicated in Table 1.
FIG. 4 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 4. — Detail of the northern Morondava Basin with fossilbearing outcrops. Type localities: 1, Eryma granuliferum and?Coleia incerta; 2, Eryma madagascariensis. Full species names are indicated in Table 1.
FIG. 16 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 16. — Line drawings of Hoploparia collignoni (Van Straelen, 1949), by F. Fogliazza, lateral views. Note differences in ornament of abdominal somites and first propodus that may be linked either to intraspecific variation or to sexual dimorphism.
FIG. 15 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 15. — Pereiopods of Hoploparia collignoni (Van Straelen, 1949) from the Albian of the Sitampiky region, eastern Mahavavy River, southern Mahajanga Basin: A-C, fragmentary chela (MNHN.F.R03942, Malandiandro, gisement 46), in lateral, dorsal and ventral views, respectively, ornament of lateral margins: outer margin (B) reinforced by a slightly tuberculate carina, inner margin (C) by a carina of two rows of aligned, strong spines; D-F, fragmentary chela (MNHN.F.R03952, syntype of Hoploparia sculpta, Malandiandro, gisement 42), in lateral, dorsal and ventral views, respectively, ornament of lateral margins: outer margin (E) reinforced by a slightly tuberculate carina, inner margin (F) by a carina of two rows of aligned,strong spines; G-I, fragmentary chela (MNHN.F.A31662, syntype of Hoploparia intermedia, Befamonto, gisement 42), in lateral, dorsal and ventral views, respectively, ornament of lateral margins: outer margin (H) reinforced by a carina of two rows of aligned, small spines, inner margin (I) by a carina of two rows of aligned, strong spines. Scale bars: 2 cm. Photographs by C. Lemzaouda (MNHN).
FIG. 11 in Revision of Mesozoic decapod crustaceans from Madagascar
FIG. 11. —?Eryma australe (Secrétan, 1964) from the lower Tithonian of the northern Analavelona Massif, southern Morondava Basin: A, B, holotype (MNHN.F.R03972, southwest of Ankilivalo, gisement 1153), fragmentary cheliped showing very large, compressed propodus with smooth outer margin (A), and strongly tuberculate inner margin (B); index and dactylus curved with occlusal opening very broad, note occlusal margin of index with one row of small rounded teeth and two strong basal tubercles of dactylus. Scale bars: 2 cm. Photographs by C. Lemzaouda (MNHN).
FIG. 4 in Peligrotherium tropicalis (Mammalia, Dryolestida) from the early Paleocene of Patagonia, a survival from a Mesozoic Gondwanan radiation
FIG. 4. — Homologies in upper molars of Mesungulatidae and Peligrotheriidae, and comparison with Periptychidae cheekteeth; A, left M3 of Mesungulatum houssayi Bonaparte & Soria, 1984; B, left M2-3 of Peligrotherium tropicalis Bonaparte, Van Halen & Kramartz, 1993; C, left P3-M3 of Periptychus rhabodon Cope, 1882. Abbreviations: ac, anterior cingulum; asc, anterior stylar cusp; ca, anterior crista; cp, posterior crista; hyo, hypocone; mo, metacone; pa, paracone; pc, posterior cingulum; psc, posterior stylar cusp; po, protocone; sty, stylocone. Scale bars: A, B, 5 mm; C, 10 mm.
FIG. 1 in Peligrotherium tropicalis (Mammalia, Dryolestida) from the early Paleocene of Patagonia, a survival from a Mesozoic Gondwanan radiation
FIG. 1. — Peligrotherium tropicalis Bonaparte, Van Valen & Kramartz, 1993, stereopairs in occlusal view; A, right dentary fragment with distal part of m1 alveolus, m2, and fragmentary alveolus of m3 (MLP 90-II-12-60); B, right isolated tooth, probably p4 (MLP 90-II-12-61); C, D, maxillar fragment; C, with right M1-M2; D, with left M1 fragment, M2-M4 and fragmentary alveolus of M5 (MLP 90-II-12-5). Scale bars: 5 mm.
FIG. 5 in Peligrotherium tropicalis (Mammalia, Dryolestida) from the early Paleocene of Patagonia, a survival from a Mesozoic Gondwanan radiation
FIG. 5. — Reconstruction of the occlusion of Peligrotherium tropicalis Bonaparte, Van Halen & Kramartz, 1993; A, right M1- M2 (MLP 90-II-12-58) and right dentary with m1 and m2-3 (UNPSJB PV 914), internal view; B, same specimens in occlusal view. Dotted line represents the lower p4, m1-2 and continuous line upper P4-M1. Abbreviation: pa, paracone. Scale bar: 5 mm.
FIG. 3 in Structure and genesis of the Taukha Mesozoic accretionary prism (southern Sikhote-Alin, Russia)
FIG. 3. — Generalized cross-section of the Taukha terrane and stratigraphic columns. Abbreviations: Er, Erdagouskaya unit; Gr, Gorboushinskaya unit; Sk, Skalistorechenskaya unit.
Figure 21 in A new Thai Mesozoic lungfish (Sarcopterygii, Dipnoi) with an insight into post-Palaeozoic dipnoan evolution
Figure 21. Plot of the phylogenetic tree against stratigraphy and palaeogeography. The upper row shows schematic evolution of the palaeogeographical pattern over time. The lower row shows the phylogenetic tree included in the palaeogeography. Vicariant events are favoured over dispersal events.
Figure 17 in A new Thai Mesozoic lungfish (Sarcopterygii, Dipnoi) with an insight into post-Palaeozoic dipnoan evolution
Figure 17. Previous hypotheses of phylogenetic relationships within the dipnoan taxa included in the present study.
Figure 20 in A new Thai Mesozoic lungfish (Sarcopterygii, Dipnoi) with an insight into post-Palaeozoic dipnoan evolution
Figure 20. Plot of the phylogenetic tree against stratigraphy to show the correlation between stratigraphy and phylogeny.
Figure 18 in A new Thai Mesozoic lungfish (Sarcopterygii, Dipnoi) with an insight into post-Palaeozoic dipnoan evolution
Figure 18. Strict consensus tree of 18 equally parsimonious trees using Dipterus as outgroup (length = 29, CI = 0.759, RI = 0.825). On the right are shown the differences in the relationship patterns within the 50% majority rule tree. The main synapomorphies are exemplified under their respective node and the Bremer support above the nodes.
Figure 15 in A new Thai Mesozoic lungfish (Sarcopterygii, Dipnoi) with an insight into post-Palaeozoic dipnoan evolution
Figure 15. Relationships between Arganodus atlantis, Asiatoceratodus sharovi and Neoceratodus forsteri based on Schultze's (1981) interpretation of bone fusion (A) and relationships between 'Asiatoceratodus' (Arganodus) atlantis, Asiatoceratodus sharovi and Neoceratodus forsteri based on Kemp's (1998) interpretation of bone fusion (B).
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Allen Brain Atlas
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