Maastrichtien

Holotype of Alcione elainus. Fig. 6 of: Longrich, N. R., Martill, D. M., & Andres, B. (2018). Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. PLoS biology, 16(3), e2001663. --- Original figure legend: A. elainus FSAC-OB 2, holotype partial skeleton and FSAC-OB 217, metacarpal IV. (A) Holotype right humerus in anterior view, (B) holotype right ulna and radius in anterior view, respectively, (C) holotype sternum in left lateral view, (D) referred metacarpal IV, (E) holotype, distal end of left metacarpal IV and left scapulocoracoid, and (F) holotype right femur in posterior view. Abbreviations: co, coracoid; cr, cristospine; dc, distal condyle; dpc, deltopectoral crest; ect, ectepicondyle; fh, femoral head; gl, glenoid; gt, greater trochanter; hh, humeral head; hum, humerus; mcIV, metacarpal IV, pc, proximal cotyle; pf, pneumatic foramen; rad, radius; scpr, supracondylar process; ste, sternum; uln, ulna.

It is the southern flank of a syncline Campanian, Maastrichtian and Eocene age(35-55 million ys)flakes represented by conglomerates overlying gypsum marls in the syncline; but also an undeveloped alabaster deposit giving way to a beautiful landscape 

Goronyosaurus nigerensis - unusual tylosaurine mosasaur from maastrichtian of Niger

Life restoration of the mosasaurine mosasaurid Eremiasaurus, with unknown portions and soft tissues based primarily on Prognathodon and supplemented with Mosasaurus where needed. References Leblanc, A.R.H.; Caldwell, M.W.; Bardet, N. (2012). "A new mosasaurine from the Maastrichtian (Upper Cretaceous) phosphates of Morocco and its implications for mosasaurine systematics". Journal of Vertebrate Paleontology 32 (1): 82–104. Lindgren, J.; Kaddumi, H.; Polcyn, M. (2013). "Soft tissue preservation in a fossil marine lizard with a bilobed tail fin". Nature Communications 4: 2423. DOI:10.1038/ncomms3423. Konishi, T.; Brinkman, D.; Massare, J.A.; Caldwell, M.W. (2011). "New exceptional specimens of Prognathodon overtoni (Squamata, Mosasauridae) from the upper Campanian of Alberta, Canada, and the systematics and ecology of the genus". Journal of Vertebrate Paleontology 31 (5): 1026–1046. Russell, D.A. (1967). "Systematics and morphology of American mosasaurs". Bulletin of the Peabody Museum of Natural History 23: 1–241.

Carinodens acrodon holotype left maxilla (MHNM.KHG.1510) (A) compared to Xenodens calminechari holotype left maxilla (MHNM.KHG.331) (B), in lateral view; both from Sidi Chennane, Oulad Abdoun Basin, Morocco; Phosphates, Upper Couche III, uppermost Maastrichtian [9,24]. Scales = 50 mm.

Reconstrucuon of Bagaraatan ostromi gen. et sp. n. from the ?mid-Maastrichtian Nemegt Formation of Nemegt, Mongolia.

Caudal vertebrae in Begaraaten ostromi gen. et sp. n. from the ?mid-Maastrichtian Nemegt Formation at Nemegt, Mongolia. A-E. Preserved caudals lst-l3th (A-C) and 1Sth-20th (D, E) in lateral view. F. Anterlor view of 1st preserved caudal with articulated part of spine of preceding caudal. G. Anterior view of I I th preser-ved caudal. Scale bar 2 crn.

Holotype of Alcione elainus. Fig. 6 of: Longrich, N. R., Martill, D. M., & Andres, B. (2018). Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. PLoS biology, 16(3), e2001663. --- Original figure legend: A. elainus FSAC-OB 2, holotype partial skeleton and FSAC-OB 217, metacarpal IV. (A) Holotype right humerus in anterior view, (B) holotype right ulna and radius in anterior view, respectively, (C) holotype sternum in left lateral view, (D) referred metacarpal IV, (E) holotype, distal end of left metacarpal IV and left scapulocoracoid, and (F) holotype right femur in posterior view. Abbreviations: co, coracoid; cr, cristospine; dc, distal condyle; dpc, deltopectoral crest; ect, ectepicondyle; fh, femoral head; gl, glenoid; gt, greater trochanter; hh, humeral head; hum, humerus; mcIV, metacarpal IV, pc, proximal cotyle; pf, pneumatic foramen; rad, radius; scpr, supracondylar process; ste, sternum; uln, ulna.

Holotype of Alcione elainus. Fig. 6 of: Longrich, N. R., Martill, D. M., & Andres, B. (2018). Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. PLoS biology, 16(3), e2001663. --- Original figure legend: A. elainus FSAC-OB 2, holotype partial skeleton and FSAC-OB 217, metacarpal IV. (A) Holotype right humerus in anterior view, (B) holotype right ulna and radius in anterior view, respectively, (C) holotype sternum in left lateral view, (D) referred metacarpal IV, (E) holotype, distal end of left metacarpal IV and left scapulocoracoid, and (F) holotype right femur in posterior view. Abbreviations: co, coracoid; cr, cristospine; dc, distal condyle; dpc, deltopectoral crest; ect, ectepicondyle; fh, femoral head; gl, glenoid; gt, greater trochanter; hh, humeral head; hum, humerus; mcIV, metacarpal IV, pc, proximal cotyle; pf, pneumatic foramen; rad, radius; scpr, supracondylar process; ste, sternum; uln, ulna.

aff. Quetzalcoatlus, cervical vertebra (FSAC-OB 14). In (A), dorsal view, (B) ventral view; (C), left lateral view, and (D), anterior view. Abbreviations: dlr = dorsolateral ridge; hyp = hypapophysis; nsp = neural spine; pex = postexapophysis; poz = postzygapophysis; prz = prezygapophysis; pzl = prezygapophyseal laminae; vfo = ventral fossa, Maastrichtian, Ouled Abdoun basin, Morocco

Rendering of CT scan segmentation of Xenodens calminechari, MHNM.KHG.331 (holotype), left maxilla; Sidi Chennane, Oulad Abdoun Basin, Morocco; Phosphates, Upper Couche III, uppermost Maastrichtian. (A), lateral view; (B), dorsal view; (C), medial view; (D), ventral view; (E), anterior view. Scale = 50 mm.

Stelladens, teeth of S. mysteriosus (MHNM.KHG.1436, holotype), in (a,f) labial view, (b,g) lingual view, (c,h) anterior view, (d,i) posterior view, (e,j) occlusal view. Abbreviations: ac = accessory carinae; ca = anterior carina, pc = posterior carina. Scale = 5 cm. Sidi Chennane, Oulad Abdoun Basin, Morocco, Lower Couche III, Maastrichtian.

The European troodontid Tamarro insperatus (MCD-7073) gen. et sp. nov. from the uppermost Maastrichtian of the Tremp Group, Tremp Basin, Southern Pyrenees. Photographic and interpretative ilustrations of the right second metatarsal in anterior (A-A’), lateral (B-B’), posterior (C–C’), medial (D-D’), and distal (F-F’) views. Scheme illustrating the gradual transition of the articular surface–grey arrow–for the accommodation of the metatarsal III (E). Detail of the distal end of the metatarsal II in anterior view showing the anterior contact surface of the metatarsal III (G). Detail of the articular surface of the metatarsal IV in the posterodistal part of the second metatarsal (H) ant anterior; f foramen; lat lateral; lc medial condyle; mc, lateral condyle; II–III contact between the second and third metatarsals; II–IV contact between the second and fourth metatarsals; plr plantar ridge; s sulcus.

Plate 53. Borogovia gracilicrus gen. et sp. n. 1. Fragmentary right pes, in: a dorsal, b ventral, views; ZPAL MgD-11174, holotype, X 0.5. 2. Phalanx 11-1 of the left pes, medial view; same specimen, X 1. 3. Ungual of left second pedal digit, ventral view; same specimen, X 1. 4. Phalanx 111-3 of the left pes, lateral view; same specimen, X 1. 5. Phalanges IV-1 to IV-4 of the left pes, lateral view; same specimen, X 1. 6. Distal portion of right metatarsal 111, posterior view; same specimen, X 1. 7. Distal portion of left metatarsal IV, medial view; same specimen, X 1. 8. Distal portion of left metatarsal 11, lateral view; same specimen, X 1. 9. Right tibiotarsus, a distal portion and b proximal portion with fragment of the fibula attached, posterior views, c distal portion, anterior view, d distal portion, lateral view; same specimen, X 0.5. Nemegt Formation, ?Late Campanian or ?Early Maastrichtian, Ultan Ula IV, Nemegt Basin, Gobi Desert, Mongolia

Mandible in Bagaraatan ostromi gen. et sp. n. from the mid-Maastrichtian Nemegt Formation at Nemegt, Mongolia. A-B. Reconstruction on left mandible in lateral and medial views. Left dentary in dorsal view. D-E. Posterior part of left mandible in dorsal and posterior views. F. Cross-section through dentary at the end of preserved fragment.

Holotype maxilla of the lambeosaurine hadrosaurid Ajnabia odysseus from the Late Cretaceous (late Maastrichtian) of Sidi Chennane, Morocco