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1,301 results for “Early Cretaceous”
Figure 1 from: Zheng B, Ren D, Wang Y (2016) A new species of Lasiosmylus from the Early Cretaceous, China clarifies its genus-group placement in Ithonidae (Neuroptera). ZooKeys 636: 41-50. https://doi.org/10.3897/zookeys.636.10103
Figure 1 - New materials of Lasiosmylus newi: CNU-NEU-LB2015001P/C, CNU-NEU-LB2015002. A composite photographs of habitus of part and counterpart (CNU-NEU-LB2015001P/C) hp, humeral plate (CNU-NEU-LB2015001C) B line drawing (CNU-NEU-LB2015001C) C habitus photograph, hp, humeral plate (CNU-NEU-LB2015002) D line drawing (CNU-NEU-LB2015002). Scale bars: 5 mm (A–D).
Figure 4 from: Zheng B, Ren D, Wang Y (2016) A new species of Lasiosmylus from the Early Cretaceous, China clarifies its genus-group placement in Ithonidae (Neuroptera). ZooKeys 636: 41-50. https://doi.org/10.3897/zookeys.636.10103
Figure 4 - Lasiosmylus longus sp. n. (holotype CNU-NEU-LB2015003), line drawings. A right forewing B left hind wing C right hind wing. Scale bars: 5 mm (A–C).
Figure 3 from: Zheng B, Ren D, Wang Y (2016) A new species of Lasiosmylus from the Early Cretaceous, China clarifies its genus-group placement in Ithonidae (Neuroptera). ZooKeys 636: 41-50. https://doi.org/10.3897/zookeys.636.10103
Figure 3 - Lasiosmylus longus sp. n. (holotype CNU-NEU-LB2015003). A habitus photograph B hp, humeral plate (left hindwing) C line drawing. Scale bars: 5 mm (A, C), 1 mm (B).
FIGURE 6 in Early Cretaceous angiosperm leaves from the Dakota Formation, Hoisington III locality, Kansas, USA
FIGURE 6. Longstrethia aspera (Lesquereux) comb. nov. 1, UF15706-24578, middle and lower portion of lamina. Scale bar equals 1 cm. 2, UF15706-24560, specimen showing secondary veins and toothed margin. Scale bar equals 5 mm. 3, Enlargement of Figure 6.1 (left middle portion of lamina; indicated by arrow) to show fine venation. Scale bar equals 2 mm.
FIGURE 1 in Early Cretaceous angiosperm leaves from the Dakota Formation, Hoisington III locality, Kansas, USA
FIGURE 1. Regional outcrop of the Dakota Formation and the location of the Hoisington III locality and other plant megafossil localities discussed in the text. 1, Hoisington III, Kansas (UF 15706); 2, Braun Ranch, Kansas (UF15709); 3, Rose Creek, Nebraska (UF15713); and 4, Courtland I, Minnesota (UF18267). "*" indicates type area of the Dakota Formation. Map extends from southern Minnesota to north central Kansas along the eastern margin of the Western Interior Seaway in the United States. The inset map shows the location of the study area in USA. State boundaries are dashed. Outcrop map is based on figure 1 of Witzke and Ludvigson (1996).
Figure 1 in The First Cretaceous Epyrine Wasp (Hymenoptera: Bethylidae): A New Genus and Species from Early Cenomanian Kachin Amber
Figure 1. Schematic line drawing of a fictitious bethylid wasp head with indication of measurements used in the present study.
Figure 1 in Amiid remains (Actinopterygii, Amiiformes) from the Early Cretaceous Marizal Formation (Tucano Basin) of Northeastern Brazil
Figure 1. – Vertebral centrum of the Amiidae - Vidalaminae, UERJPMB 371, from the Amargosa Bed of the Marizal Formation (Tucano Basin), Northeastern Brazil. C: centrum; N.C., neural canal; N.F.: neural facets for the neural arches. Scale bar = 10 mm.
FIGURE 1 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae
FIGURE 1. Locality map showing plesiosaur-bearing fossil localities in Australia (modified from Kear, 2003). Specimens analysed here are from the Richmond area, Queensland and Coober Pedy, South Australia.
FIGURE 10 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae
FIGURE 10. Specimen RM FR436. A. 12 anterior cervical vertebrae. B. Ventral view. C. Anterior view. Note the skewed vertebra. Scales shown on figure.
FIGURE 4 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae
FIGURE 4. Vertebrae associated with specimen QM F11050 – Eromangasaurus australis holotype. A. QM F12216, lateral view showing lateral ridge (red arrow). B. Cojoined vertebrae QM F12217, anterior view. C. QM F12217, lateral view showing lateral ridges (red arrows). D. QM F12219a, anterior view. E. QM F12219a, lateral view showing lateral ridge (red arrow). F. QM F12219b, lateral view showing lateral ridge (long red arrow) and rib facet borne wholly on centrum (short red arrow). G. QM F12219b, ventral view showing foramina subcentralia (white arrows) separated by a mid-ventral keel. Scales shown on figure.
FIGURE 13 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae
FIGURE 13. Normalised cervical vertebral position plotted against vertebral length index (VLI) for Australian plesiosaurians and non-Australian elasmosaurids. Data for QM F3567 and RM FR271 from Sachs (2004); Opallionectes andamookaensis from Kear (2005a); Elamosaurus platyurus, Thalassomedon haningtoni, Callawayasaurus colombiensis, and Cm Zfr 115 from O'Keefe and Hiller (2006); Vegasaurus molyi from O'Gorman el. (2015); AMNH 1495, AMNH 5835, and AMNH 2554 from Otero (2016); Aristonectes parvidens from O'Gorman (2016a); Kawanectes lafquenianus from O'Gorman (2016b); Lagenanectes richterae from Sachs et al. (2017) and Jucha squalea from Fischer et al. (2020).
FIGURE 8 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae
FIGURE 8. Specimen QM F2085. A. Pectoral vertebra, anterior view. B. Pectoral vertebra, lateral view. C. Sacral vertebra, posterior view. D. Sacral vertebrae, lateral view. E. Dorsal vertebra, lateral view. F. Dorsal vertebra, anterior view. Scales shown on figure.
FIGURE 7 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae
FIGURE 7. Specimen RM FR269. A. Transition from dorsals to sacrals, right lateral view. B. Transition from pectorals to dorsals, right lateral view. Scales shown on figure.
FIGURE 8 in A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study
FIGURE 8. Results of the inclusion of Vegrandichthys coitecus gen. et sp. nov. in the phylogeny of Enchodontidae using multiple phylogenetic approaches. A) The one retained tree of Enchodontidae with the Phylogenetic Morphometrics (PM) method using only landmark data, the Best Score reached = 0.04079. B) Dots in red correspond to the landmark configuration of the preopercle used to run the PMA. C) Implied Weighted Maximum Parsimony (IWMP) tree (the same tree topology with K=10 and K=100) based exclusively on discrete morphological data. D) Maximum a Posteriori (MAP) phylogeny obtained with Bayesian Inference. E) Tree obtained with the combined matrix of morphological discrete data and the landmark configuration of the preopercle, using Standard Maximum Parsimony; Best score = 316.04924. In green background is the subfamily Eurypholinae, except in A that includes Unicachichthys. Background in red is the clade formed by Parenchodus + Enchodus species. In all the phylogenetic analyses Vegrandichthys coitecus gen. et sp. nov. new is recovered as a member of the subfamily Eurypholinae along with Eurypholis and Saurorhamphus. Numbers by nodes indicate Bremmer / bootstrap (when present) values except in D, where numbers indicate the posterior probability. Full phylogenetic hypotheses and their description can be accessed in Appendix II.
FIGURE 4 in A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study
FIGURE 4. Vegrandichthys coitecus gen. et sp. nov. A) A close-up of the lateral view of the head; B) Drawing of the head and pectoral girdle in lateral view. Abbreviations: aa, anguloarticular; cl, cleithrum; den, dentary; df, dilatator fossa; dpl, dermopalatine, dpl.t, dermopaltine teeth; ect, ectopterygoid; en, endopterygoid; epo, epiotic; fr, frontals; hy, hyomandibula; io, infraorbital; iosc, infraorbital sensory canal; la, lacrimal; le, lateral ethmoid; mpt, metapterygoid; msc, mandibular sensory canal; mx, maxilla; op, opercle; pa, parietals; pmf, premaxillar fenestra; pmx, premaxilla; pop, preopercle; ps, parasphenoid; pte, pterotic; ptt, posttemporal; q, quadrate; rar, retroarticular; sc, sclerotic; scl, supracleithrum; soc, supraoccipital; sop, subopercle; sp, sphenotic.
FIGURE 1 in A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study
FIGURE 1. Enchodontid species from the El Chango quarry, Chiapas, Mexico; A, IHNFG-2987, holotype of Unicachichthys multidentata; B, IHNFG-5816, holotype and single specimen of Veridagon avendanoi. Scale bar equals 1 cm.
FIGURE 7 in A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study
FIGURE 7. Phylogenetic relationships of Enchodontidae including Vegrandichthys coitecus gen. et sp. nov. obtained following the protocol described of the Standard of Maximum Parsimony (TL= 316, CI = 0.456, RI= 0.693). The subfamily Eurypholinae in green background and Enchodontinae in red background. Numbers by nodes indicate the supports values of Bremer/Bootstrap. Black squares indicate the presence of synapomorphic characters in Enchodontidae. Node a, Enchodontidae: presence of anteroventral prongs (36:1); absence of supraorbital bone (43:1); pelvic fin at or posterior to the dorsal fin in position (52:1); opercular and subopercular dermal pattern as tubercles (55:2). Node b: Laminar posterior limb in the ventral portion of the preopercle (50:0). Node c: Ectopterygoid teeth between six to eight teeth with the second tooth longest (12:2). Node d, Subfamily Eurypholinae: Ventral portion of cleithrum widens anteriorly and posteriorly (60:2). Node e: Laterally exposed articulation mandible-quadrate (34:1); Opercular horizontal strengthening ridge continues past posterior edge to form a spine (52:2). Node f: Mandibular dermal pattern as ridges with tubercles along each ridge (41:2); Preopercular dermal pattern as ridges with tubercles (54:2). Node q: Sigmoidal lateral view of dermopalatine teeth (16:2). Numbers by nodes show the Bremer/Bootstrap values. The subfamily Enchodontinae is only supported by homoplastic characters, therefore, we omitted them in the node description. Full description and character mapping are in Appendix II.
FIGURE 6 in A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study
FIGURE 6. Scutes, scales and associated bones of Vegrandichthys coitecus gen. et sp. nov. A) Dorsal scutes series, B) close-up of the dorsal scutes region, C) close-up of the lateral line of scales, and D) drawing of the probable position and overlapping of the lateral line of scales. Abbreviations. llc, lateral lines canal; l.sc, lateral line scales; v, vertebrae. Ordinal numbers denote the number of dorsal scute. Black arrows point out each of the dorsal scutes. Red arrows point out the supraneurals.
FIGURE 5 in A long snout enchodontid fish (Aulopiformes: Enchodontidae) from the Early Cretaceous deposits at the El Chango quarry, Chiapas, southeastern Mexico: A multi-approach study
FIGURE 5. Close-up of different anatomical structures in the holotype of Vegrandichthys coitecus gen. et sp. nov. A) Pectoral girdle and fin, B) Pelvic girdle and fin, C) Dorsal fin and D) Anal fin. All anterior structures are laterally exposed. Abbreviations: cl, cleithrum; co, coracoid; dpt.a, anal fin distal pterygiophores; dra, dorsal fin rays; lw, lateral wing; pb, pelvic bone; pfr, pectoral fin rays; pp, posterior process; ppt.a, anal fin proximal pterygiophores; ppt, proximal pterygiophores; pr, pelvic rays; ra.a, anal fin rays; scl, supracleithrum; v, vertebra.
Fig. 1 in A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China
Fig. 1. Left maxilla (A) and left dentary (B) of carcharodontosaurid theropod Kelmayisaurus petrolicus Dong, 1973 (IVPP V 4022, China, Lianmugin Formation, Lower Cretaceous). Photographs in lateral (A1, B1), medial (A2, B2), ventral (A3), and dorsal (B3) views. Scale bars 5 cm. Designation "d" refers to dentary tooth, designation "m" refers to maxillary tooth position. Dorsal view of dentary shows tooth row only.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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