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1,301 results for “Early Cretaceous”
Figure 2 from: Ren D, Peng Y, Wang X (2011) A new fossil silky lacewing genus (Neuroptera, Psychopsidae) from the Early Cretaceous Yixian Formation of China. ZooKeys 130: 217-228. https://doi.org/10.3897/zookeys.130.1576
Figure 2 - Undulopsychopsis alexi gen. et sp. n. The holotype CYNB044. Drawing. Scale bar = 5 mm.
Figure 1 from: Williamson TE, Brusatte SL, Wilson GP (2014) The origin and early evolution of metatherian mammals: the Cretaceous record. ZooKeys 465: 1-76. https://doi.org/10.3897/zookeys.465.8178
Figure 1 - Phylogeny and diversification patterns of major mammal lineages after Luo (2007).
Figure 10 from: Williamson TE, Brusatte SL, Wilson GP (2014) The origin and early evolution of metatherian mammals: the Cretaceous record. ZooKeys 465: 1-76. https://doi.org/10.3897/zookeys.465.8178
Figure 10 - Skeleton of Monodelphis domestica. Scale bar is 1 cm.
Figure 5 in Histology of ganoid scales from the early Late Cretaceous of the Kem Kem beds , SE Morocco : systematic and evolutionary implications
Figure 5. - Legends on opposite page.
Data from: A new specimen of large-bodied basal enantiornithine Bohaiornis from the early Cretaceous of China and the inference of feeding ecology in Mesozoic birds
Open the record for dataset details and reuse information.
Figure 5 in Modern hydrophilid clades present and widespread in the Late Jurassic and Early Cretaceous (Coleoptera: Hydrophiloidea: Hydrophilidae)
Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium.
Figure 11 in Revision of the enigmatic crocodyliform Elosuchus felixi de Lapparent de Broin, 2002 from the Lower-Upper Cretaceous boundary of Niger: potential evidence for an early origin of the clade Dyrosauridae
Figure 11. Measurements of jaw width and height across the symphyseal sections of dyrosaurid crocodyliforms, including Fortignathus felixi (de Lapparent de Broin, 2002) comb. nov., specimens MNHN.F INA 21 and MNHN.F INA 22.
Figure 5 in Systematic revision of Sarcosuchus hartti (Crocodyliformes) from the Recôncavo Basin (Early Cretaceous) of Bahia, north-eastern Brazil
Figure 5. Sarcosuchus hartti, mandible (BMNH R 3423). A, left lateral view. B, ventral view. C, anterior view. D, dorsal view. Scale bar: 10 cm.
Figure 7 in Systematic revision of Sarcosuchus hartti (Crocodyliformes) from the Recôncavo Basin (Early Cretaceous) of Bahia, north-eastern Brazil
Figure 7. Sarcosuchus hartti, right hemimandible (MN 7459-V). A, dorsal view. B, ventral view. C, medial view. D, left lateral view. Abbreviations: 7th, seventh dentary alveoli; 16th, sixteenth dentary alveoli; 20th, twentieth dentary alveoli; d-spl, suture between dentary and splenial; d-d, suture between dentary bones; Mc, Meckel's Canal; dp, dentary pits of the ventral ornamentation; op, occlusion pits; gr, groove region. Scale bar: 3 cm.
Figure 1 in An Early Cretaceous anomopod (Crustacea: Branchiopoda) preserved in amber that reveals an unexpected venture during the evolution of the order
Figure 1. Pseudoscapholeberis enigmatica, gen. et sp. nov. Holotype. First instar female, lateral, as seen embedded in amber. The head has been pushed backward between the carapace valves, and the postabdomen has been forced unnaturally outside the carapace chamber, and twisted, thereby displaying its topographically dorsal surface. The trunk limbs have also been forced out of the carapace chamber and lost.
FIGURE 1 in Maastrichtian representatives of the dragonfly family Aeschnidiidae question the entomofaunal turnover of the early Late Cretaceous
FIGURE 1. Dakotaeschnidium spedeni gen. et sp. nov., holotype YPM IP 028154. A, Part. B, Counterpart. Scale bars = 5 mm.
Fig. 1 in The First Reconstruction of the Head Anatomy of a Cretaceous Insect, †Gerontoformica gracilis (Hymenoptera: Formicidae), and the Early Evolution of
Fig. 1. Photographic images of the amber fossil. (A) Overview of the amber piece:the solid arrowheads indicate synincluded adult †Gerontoformica sternorhabda, the open arrowhead indicates synincluded †G. gracilis pupa, and the circle outlines focal †G. gracilis specimen CASENT0741232. (B) Overview of specimen CASENT0741232 in ventrolateral view. (C) Head of †G. gracilis in frontolateral view (oblique dorsal); the short blue arrow indicates the process on the first labial palpomere. (D) Head of †G. gracilis in frontolateral view (oblique ventral). (E) Head of †G. gracilis in posterolateral view. Abbreviations: bb, bulbus; cl, clypeus; clc, clypeal chaetae; ce, compound eye; ess, epistomal sulcus; fc, frontal carina; fla, antennal flagellum; ga, galea; md, mandible; plb, labial palp; pmx, maxillary palp; sc, scapus.The photographs in A, B and D were also used in Boudinot et al. 2022b.
Fig. 8. 3D in The First Reconstruction of the Head Anatomy of a Cretaceous Insect, †Gerontoformica gracilis (Hymenoptera: Formicidae), and the Early Evolution of
Fig. 8. 3D reconstructions of the heads of †Gerontoformica gracilis (on the right) and outgroup taxa (on the left) illustrating character transitions at the root of the total clade Formicidae.The relevant characters and states are marked with cyan outlines for plesiomorphies and magenta outlines for apomorphies; where applicable, physical directions of state changes are marked by arrows of the same colors. Complete illustrations of character states in all investigated taxa can be found in the character list at the end of this contribution. Char. 24: Frontal view on the head of Sceliphron caementarium and †G. gracilis, showing a flat versus bulging frontal region between the toruli. Char. 34: Lateral view of the head of Ampulex sp. and †G. gracilis showing large versus small compound eyes. Char. 57: Sagittal view of the tentorium of Ampulex sp. and †G. gracilis showing a long versus a short dorsal tentorial arm. Char. 73: Outer surface of the labrum of Ampulex sp. and †G. gracilis showing absence versus presence of a transverse line of setae.Char. 79: Frontal view of the scapopedicellar articulation of Ampulex sp. and †G. gracilis showing a basally straight and cylindrical versus a basally curved and flattened pedicel, in addition to an anteriorly deeply notched scapus tip. Char. 83: Lateral view of the mandibular articulation of S. caementarium and †G. gracilis showing a short versus elongated dorsal (secondary) mandibular articulation. Char. 145: Dorsal view of the cephalic digestive tract of †G. gracilis showing presence of the pharyngeal gland (absence in outgroups not shown).
Figure 26 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 26. Photographs and line drawings of the pedal elements of Ligabuesaurus leanzai. A–C, right metatarsal I MCF-PVPH-233/21 in posterior (A), proximal (B) and distal (C) views. D–F, right metatarsal II MCF-PVPH-233/22 in posterior (D), proximal (E) and distal (F) views. G–I, right metatarsal III MCF-PVPH-233/23 in posterior (G), proximal (H) and distal (I) views. J, K, right metatarsal IV MCF-PVPH-233/24 in posterior (J) and proximal (K) views. L, M, right metatarsal V MCF-PVPH-233/25 in posterior (L) and proximal (M) views. N, right proximal phalanx I-1 MCF-PVPH-233/26 in posterior view. O, right ungueal phalanx MCF-PVPH-233/27 in medial view. P, right proximal phalanx II-1 MCF-PVPH-233/28 in posterior view. Abbreviations: I, articular surface for metatarsal I; II, articular surface for metatarsal II; III, articular surface for metatarsal III; icg, intercondylar groove; IV, articular surface for metatarsal IV; lc, lateral condyle; mdp, mediodistal process; mh, medial hollow; pas, proximal articular surface; V, articular surface for metatarsal V; vf, vascular foramen. Scale bars: 10 cm.
Figure 6 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 6. Photographs and line drawings of the teeth of Ligabuesaurus leanzai. A, ten maxillary teeth and fragments of unerupted teeth in sedimentary matrix MCF-PVPH-233/01 in lingual view. B–F, isolated maxillary tooth MCF-PVPH-744 in lingual (B), apical (C), labial (D), mesial (E) and distal (F) views. Abbreviations: awf, apical wear facet; cc, cingular cusp; de, dentine surface; e, enamel surface; mg, mesial groove; mwf, mesial wear facet; rt, replacement tooth fragment; tc, tooth crown; tr, tooth root; t-1/10, tooth no. 1 and no. 10; we, wrinkled enamel surface. Scale bar: 3 cm.
Figure 5 in Anatomy and relationships of the bizarre Early Cretaceous pliosaurid Luskhan itilensis
Figure 5. Orbital and postorbital regions of the holotype of Luskhan itilensis (YKM 68344/1_262). A, orbital and postorbital regions of a high-resolution three-dimensional model, in anterodorsal view. The extent of the orbit and supratemporal fenestra is reconstructed by the dotted lines. B, postorbital region in dorsal view. C–H, photographs and interpretations of the right postorbital and temporal bars in lateral (C, D), ventral (E, F) and medial (G, H) views.
Figure 13. Phylogenetic relationships among Pliosauridae. A–C in Anatomy and relationships of the bizarre Early Cretaceous pliosaurid Luskhan itilensis
Figure 13. Phylogenetic relationships among Pliosauridae. A–C, temporally scaled strict consensus trees depicting the phylogenetic relationships of Pliosauridae in an implied weighting maximum parsimony framework, with increasing concavity constants (k), which progressively reduce the penality applied to homoplasic characters. A, k = 6. B, k = 9. C, k = 12.
FIGURE 1 in The first Early Cretaceous representative of the fly family Tipulidae from the lower Barremian dysodiles of Lebanon (Diptera)
FIGURE 1. Leptotarsus reyi sp. nov. A, Wing photograph. B, Line drawing of wing. Scale bars = 1 mm.
FIGURE 14 in Non-marine Ostracoda (Crustacea) of the Early Cretaceous 'Pre-Salt' sediments of Brazil: An illustrated catalogue of the type specimens of Wicher, Krömmelbein, Krömmelbein & Weber, and Bate
FIGURE 14.
Supplement to: Absolute age and temperature of belemnite rostra: constrains on the Early Cretaceous cooling event.
<p>U-Pb data, stable carbon and oxygen isotopic data, clumped isotope data raw, and Sr-isotopic data</p>
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