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1,301 results for “Early Cretaceous”
FIGURE 4 in A second specimen of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (Testudines: Eucryptodira) from the Early Cretaceous Yixian Formation of western Liaoning, China
FIGURE 4. Cervical vertebrae of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (LPM-R00008) from the Early Cretaceous Yixian Formation of western Liaoning, China. Abbreviations: con, condyle; cot, cotyle; cv, cervical vertebra; h, humerus; prz, prezygapophysis; poz, postzygapophysis; tp, transverse process; u, ulna.
FIGURE 5. A in A second specimen of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (Testudines: Eucryptodira) from the Early Cretaceous Yixian Formation of western Liaoning, China
FIGURE 5. A cladogram showing the phylogenetic position of Manchurochelys manchoukuoensis. Data matrix including 20 taxa and 43 characters is modified from Vandermark et al. (2009), which in turn is based upon the data matrix of Parham & Hutchison (2003). A 50% majority-rule consensus tree was derived from 20 most parsimonious trees with tree length of 89 (CI = 0.52, RI = 0.77, RC = 0.40). The scoring of Manchurochelys manchoukuoensis was as follows: 00?0?11110?0?1?11111 11????1101 0??111???? 000.
FIGURE 2 in A second specimen of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (Testudines: Eucryptodira) from the Early Cretaceous Yixian Formation of western Liaoning, China
FIGURE 2. Line drawings of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (LPM-R00008), from the Early Cretaceous Yixian Formation of western Liaoning, China. Abbreviations: as, astragalocalcaneum; c1-c8, costal plates 1–8; cave, caudal vertebrae; cs, cervical scute; cve, cervical vertebrae; h, humerus; lf, left fibula; lt, left tibia; m1- m12, marginal scutes 1–12; mtV, metatarsal V; nu, nuchal; p1-p11, peripheral plates 1–11; pla, plastron; pdI-pdV, pedal digits I–V; ps1-ps4, pleural scutes 1–4; py, pygal; rf, right fibula; rt, right tibia; sp1-sp2, suprapygals 1–2; u, ulna; vs1- vs5, vertebral scutes 1–5; 1-8, neural plates 1–8.
FIGURE 1 in A second specimen of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (Testudines: Eucryptodira) from the Early Cretaceous Yixian Formation of western Liaoning, China
FIGURE 1. Manchurochelys manchoukuoensis Endo & Shikama, 1942 (LPM-R00008), from the Early Cretaceous Yixian Formation of western Liaoning, China.
FIGURE 3 in A second specimen of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (Testudines: Eucryptodira) from the Early Cretaceous Yixian Formation of western Liaoning, China
FIGURE 3. Skull of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (LPM-R00008) from the Early Cretaceous Yixian Formation of western Liaoning, China, in dorsal (A, B) and ventral (C, D) views. Abbreviations: bo, basiocciptial; bp, blind pits; bs, basisphenoid; ex, exoccipital; f, frontal; fb, foramen basisphenoidale; fcl, foramen caroticum laterale; fpcci, foramen posterior canalis caroticus internus; fst, foramen stapedio-temporale; hy, hyoid; m, maxilla;?n, possible nasal; op, opisthotic; pa, parietal; pal, palatine; pm, premaxilla; po, postorbital; pro, prootic; pt, pterygoid; q, quadrate;?qj, possible quadratojugal; so, supraoccipital; sq, squamosal;?, unknown bone.
FIGURE 3 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 3. Line drawings of Liaochelys jianchangensis gen. et sp. nov. (PMOL-AR00160, holotype), from the Early Cretaceous Jiufotang Formation of Lamadong, Jianchang City, western Liaoning Province, China. Abbreviations: as, astragalocalcaneum; c1-c8, costal plates 1–8; cave, caudal vertebrae; cs, cervical scute; cve, cervical vertebrae; lfe, left femur; lfi, left fibula; lh, left humerus; lt, left tibia; lu, left ulna; m1-m12, marginal scutes 1–12; mtV, metatarsal V; nu, nuchal; p1-p11, peripheral plates 1–11; pdI-pdV, pedal digits I–V; ps1-ps4, pleural scutes 1–4; py, pygal; rfe, right femur; rfi, right fibula; rt, right tibia; sp1-sp2, suprapygals 1–2; v1-v5, vertebral scutes 1–5; 1-8, neural plates 1–8.
FIGURE 4 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 4. Liaochelys jianchangensis gen. et sp. nov. (PMOL-AR00140, paratype), from the Early Cretaceous Jiufotang Formation of Lamadong, Jianchang City, western Liaoning Province, China.
FIGURE 7 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 7. Plastron of Liaochelys jianchangensis gen. et sp. nov. (PMOL-AR00140, paratype), from the Early Cretaceous Jiufotang Formation of Lamadong, Jianchang City, western Liaoning Province, China, in ventral view. The line drawings are reversed from their opposites. Abbreviations: ab, axillary buttress; cf, central fontanelle; hyo, hyoplastron; hyp, hypoplastron; ib, inguinal buttress; lf, lateral fontanelle; pof, posterior fontanelle; xi, xiphiplastron.
FIGURE 6 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 6. Carapaces of Ordosemys leios (A), Liaochelys jianchangensis gen. et sp. nov. (B), and Manchurochelys manchoukuoensis (C). (A) and (C) modified from Brinkman & Peng (1993b) and Zhou (2010). Scale bar equals 20 mm.
FIGURE 5 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 5. Skull of Liaochelys jianchangensis gen. et sp. nov. (PMOL-AR00140, paratype), from the Early Cretaceous Jiufotang Formation of Lamadong, Jianchang City, western Liaoning Province, China, in dorsal view. Abbreviations: ex, exoccipital; f, frontal; fpp, foramen palatinum posterius; fst, foramen stapedio-temporale; j, jugal; m, maxilla; n, nasal; op, opisthotic; pa, parietal; pal, palatine; pf, prefrontal; pm, premaxilla; po, postorbital; pro, prootic; q, quadrate; so, supraoccipital; sq, squamosal.
FIGURE 2 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 2. Liaochelys jianchangensis gen. et sp. nov. (PMOL-AR00160, holotype), from the Early Cretaceous Jiufotang Formation of Lamadong, Jianchang City, western Liaoning Province, China.
FIGURE 1 in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 1. Map showing the type locality (marked by an asterisk; 40º42´8ʺN; 119º41´13ʺE) of Liaochelys jianchangensis gen. et sp. nov. in Lamadong, Jianchang County, Huludao City, western Liaoning Province, China.
FIGURE 8. A in A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China
FIGURE 8. A cladogram showing the phylogenetic position of Liaochelys jianchangensis gen. et sp. nov. (A) Strict consensus of 16 MPTs (TL = 87 steps, CI = 0.53, RI = 0.78, RC = 0.41). (B) 50% majority-rule consensus of the 16 MPTs; numbers refer to bootstrap values. The scoring of Liaochelys jianchangensis gen. et sp. nov. was as follows: 01??0?1??? ??????1101 110???1??? 1??11 1???? 000
FIGURE 9 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 9. Tlayuamichin itztli gen. et sp. nov., details of the skull in IGM 6719. A, posterior part of the skull showing multiple opercular ossifications and the peculiar shape of the suboperculum in this specimen. B, detailed photograph of the dermopterotic bone; the arrow points to the peculiar anteroventral process of this bone in the new taxon. C, same photograph as in B, but in this case the arrows point to the pores of the preopercular sensory canal in the preoperculum (below), suborbital (middle) and dermopterotic (above). Scale bars equal = 10 mm.
FIGURE 14 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 14. Tlayuamichin itztli gen. et sp. nov. Detailed photograph of the caudal fin in IGM 6718. Scale bar equals = 20 mm.
FIGURE 6 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 6. Tlayuamichin itztli gen. et sp. nov. Detailed photograph of the skull in IGM 6716 (holotype). Scale bar equals = 50 mm.
FIGURE 8 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 8. Tlayuamichin itztli gen. et sp. nov. Detailed photograph of the skull in IGM 6720. Scale bar equals = 45 mm.
FIGURE 4 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 4. Tlayuamichin itztli gen. et sp. nov. Specimen IGM 6719 preserved in right lateral view. Scale bar equals 50 mm.
FIGURE 11 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 11. Tlayuamichin itztli gen. et sp. nov., jaws in IGM 6719. A, photograph; B, line drawing. Note that the retroarticular bone is a little displaced posteriorly. Scale bar equals = 10 mm.
FIGURE 3 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 3. Tlayuamichin itztli gen. et sp. nov. A, Specimen IGM 6717 preserved in right lateroventral view. B, specimen IGM 6718 preserved in right lateral view. Scale bars equal 70 mm.
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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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