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202 results for “Albian”
Text-fig. 1. Map of Primorye region with early angiosperm localities near Bolshoy Kamen, Partizansk and Jixi. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 1. Map of Primorye region with early angiosperm localities near Bolshoy Kamen, Partizansk and Jixi.
Text-fig. 9. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, b – Ternaricarpites floribundus KRASSILOV et VOLYNETS: a – spec. IBSS 320-10, b – spec. IBSS 320-31; c – Jixia pinnatipartita S.X.GUO et G.SUN, spec. IBSS 320-57. Scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 9. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, b – Ternaricarpites floribundus KRASSILOV et VOLYNETS: a – spec. IBSS 320-10, b – spec. IBSS 320-31; c – Jixia pinnatipartita S.X.GUO et G.SUN, spec. IBSS 320-57. Scale bar 0.5 cm.
Text-fig. 3. a – section of the Frentzevka Formation along the railroad near the Bolshoy Kuvshin Cape; b – the Bolshoy Kuvshin locality. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 3. a – section of the Frentzevka Formation along the railroad near the Bolshoy Kuvshin Cape; b – the Bolshoy Kuvshin locality.
Text-fig. 5. a – unit of black siltstones from the Frentsevka Formation; b – small fish, scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 5. a – unit of black siltstones from the Frentsevka Formation; b – small fish, scale bar 0.5 cm.
Text-fig. 7. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, c, e – Achaenocarpites capitellatus KRASSILOV et VOLYNETS: a – spec. IBSS 320-132, c – spec. IBSS 320-132, e – spec. IBSS 320-120; b – Onychiopsis psilotoides (STOKES et WEBB) WARD, spec. – IBSS 320-165; d, g – branching infructescence with several follicular fruits: d – spec. IBSS 320-145, g – IBSS 320-145; f – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG, spec. IBSS 320-75. Scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 7. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, c, e – Achaenocarpites capitellatus KRASSILOV et VOLYNETS: a – spec. IBSS 320-132, c – spec. IBSS 320-132, e – spec. IBSS 320-120; b – Onychiopsis psilotoides (STOKES et WEBB) WARD, spec. – IBSS 320-165; d, g – branching infructescence with several follicular fruits: d – spec. IBSS 320-145, g – IBSS 320-145; f – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG, spec. IBSS 320-75. Scale bar 0.5 cm.
Text-fig. 2. Latest Albian – Late Cretaceous palaeobotanical-palaeogeographical subregions of the North Pacific Region (a); modern outline of North-eastern Asia is shown for the Coniacian (after Smith et al. 1981): 1 – the Verkhoyansk-Chukotka Subregion, 2 – the Okhotsk-Chukotka Subregion, 3 – the Anadyr-Koryak Subregion (modified from Herman 2013) and geographical and geological position of the Turonian – Coniacian floras (b) (present-day map, modified from Shczepetov and Herman 2013). in On The Likely Palaeoelevation Of The Turonian - Coniacian Arman Flora Site (North-Eastern Asia)
Text-fig. 2. Latest Albian – Late Cretaceous palaeobotanical-palaeogeographical subregions of the North Pacific Region (a); modern outline of North-eastern Asia is shown for the Coniacian (after Smith et al. 1981): 1 – the Verkhoyansk-Chukotka Subregion, 2 – the Okhotsk-Chukotka Subregion, 3 – the Anadyr-Koryak Subregion (modified from Herman 2013) and geographical and geological position of the Turonian – Coniacian floras (b) (present-day map, modified from Shczepetov and Herman 2013).
Fig. 3 in Ostracoda (Arthropoda, Crustacea) from the Riachuelo Formation, Sergipe-Alagoas Basin, Brazil, Upper Aptian-Albian
Fig. 3. Extension of the "Megatethys Ocean", or "Mid Cretaceous Tethyan Realm", during the Albian.
FIGURE 2 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 2. Molfetta tracksite - Map of the trampled surface.
Fig. 7 in Redescription of Santanichthys diasii (Otophysi, Characiformes) from the Albian of the Santana Formation and Comments on Its Implications for Otophysan Relationships
Fig. 7. Santanichthys diasii, restoration of what is known of the Weberian apparatus.
Fig. 10. Santanichthys diasii, AMNH 12826 in Redescription of Santanichthys diasii (Otophysi, Characiformes) from the Albian of the Santana Formation and Comments on Its Implications for Otophysan Relationships
Fig. 10. Santanichthys diasii, AMNH 12826, caudal skeleton.
Fig. 9. Santanichthys diasii, AMNH 20068 in Redescription of Santanichthys diasii (Otophysi, Characiformes) from the Albian of the Santana Formation and Comments on Its Implications for Otophysan Relationships
Fig. 9. Santanichthys diasii, AMNH 20068, caudal skeleton.
FIG. 4 in Albian cockroaches (Insecta, Blattida) from French amber of Archingeay
FIG. 4. — An immature of Eadia aidae n. gen., n. sp. (Eadiidae n. width 1.9 mm.
Text-fig. 6. The locality of early angiosperm near the Palets Cape. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 6. The locality of early angiosperm near the Palets Cape.
Text-fig. 4. Schematic sections of the Frentsevka Formation in different areas. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 4. Schematic sections of the Frentsevka Formation in different areas.
Text-fig. 2. Localities of early angiosperms near Bolshoy Kamen town. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 2. Localities of early angiosperms near Bolshoy Kamen town.
Data from: A peirosaurid mandible from the Albian (Lower Cretaceous) of Algeria and the taxonomic content of Hamadasuchus (Crocodylomorpha, Peirosauridae)
<p><span>Peirosaurids form an extinct clade of terrestrial crocodylomorphs known from the Cretaceous of Africa and South America. Here, we describe a new mandibular ramus attributable to <em>Hamadasuchus</em> cf. <em>rebouli</em> from the Albian/Cenomanian of La Gara Samani (Algeria). We propose an emended diagnosis for this taxon, originally described from a left dentary fragment from the Kem Kem beds of Morocco and discuss the assignation of the specimens currently referred to it. Using ontogenetic series of extant crocodylians, we show that several mandibular characters commonly used to differentiate between close taxa instead record intraspecific or ontogenetic variability. On the other hand, reliable mandibular characters allow us to propose that the current taxonomic content of <em>Hamadasuchus</em> <em>rebouli</em> should be reduced to three specimens, pending future description of relatable cranial remains that will confirm or not this hypothesis. Finally, we demonstrate the importance of mandibular characters in phylogenies, by recovering the new specimen from La Gara Samani as closely related to North African peirosaurids on the basis of a data matrix designed solely on mandibular characters.</span></p>
Data from: A peirosaurid mandible from the Albian (Lower Cretaceous) of Algeria and the taxonomic content of Hamadasuchus (Crocodylomorpha, Peirosauridae)
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Data from: Albian infaunal Pholadomyida (Cretaceous Bivalvia), Comanchean Carbonate Shelf, Texas
Species of the Megaorder Poromyata, although common and relatively diverse in Albian-lower Cenomanian Comanchean strata in Texas and northern Mexico, have been neglected as biostratigraphic markers and paleoecological indicators. Since 1852 more than a dozen species have been identified as Homomya Agassiz, Order Pholadomyida, Superfamily Pholadomyoidea, or Pleuromya Agassiz, Order Pholadida, Superfamily Pleuromyoidea. Because valve morphologies of both genera are similar in many ways, casts of both genera are difficult to separate. Statistical analysis of key morphological properties objectively defines species concepts and assesses synonymies. Eight species are retained in Homomya, four are synonymized with these; two species are provisionally retained in "Homomya" although they differ significantly. One species is re-assigned to Liopistha (Sergipemya) alta (Roemer). Pleuromya henselli (Hill) is re-assigned to Panopea. Homomyid species range from upper Aptian to lower Cenomanian of the Comanchean Series in Texas and Mexico. Their ranges vary in duration from one million years up to eight million years. Two sets of species are distinct morphotypes: a smaller-sized set of H. knowltoni, H. tarrantensis, H. tlahualiloensis, H. kellumi, and a larger-sized set of H. cymbiformis, H. austinensis, H. vulgaris, H. budaensis, and H. auroraensis. Two end-member morphotypes are represented by the 'streamlined' Homomya knowltoni, which is an elongate, slightly inflated form with a relatively high umbo, and the cylindrical Homomya budaensis; which is a very elongate, tubular, inflated form with a very low umbo. These infaunal suspension feeders occupied calcareous mud and carbonate shelf substrates.
Data from: Early Cretaceous cyclostome bryozoans from the early to middle Albian of the Glen Rose and Walnut formations of Texas, USA
The Glen Rose and Walnut formations of southcentral and northcentral Texas comprise shallow-water carbonates deposited during the late Aptian to middle Albian on a carbonate platform. The formations are famous for their rich fossil faunas. Although bryozoans are absent in late Aptian sediments, they are frequently found encrusting bivalve shells from the early to middle Albian parts of these formations. Here, we describe the cyclostome bryozoan fauna, which includes six species; Stomatopora sp., Oncousoecia khirar n. sp., Reptomultisparsa mclemoreae n. sp., Hyporosopora keera n. sp., Mesonopora bernardwalteri n. sp. and ?Unicavea sp. Most cyclostomes are found encrusting rudist shells from Unit 2 of the Lower Member of the Glen Rose Formation and units 3 and 6 of the Upper Member of the Glen Rose Formation.
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.
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