Results 91 to 100 of about 98,208 (293)

Laurus macrocarpa Lesquereux from the mid-Cretaceous (Cenomanian) Dakota Formation, USA, is a chlamydospermous seed, not an angiosperm fruit

Acta Palaeobotanica
The fossil seed, Decaturospermum macrocarpum (Lesquereux) gen. nov. et comb. nov., is described based on specimens of latest Albian to mid-Cenomanian age (mid-Cretaceous) from the Dakota Formation of Nebraska, and Kansas, USA, which were previously ...
Steven R. Manchester, Peter R. Crane
doaj   +1 more source

New records of theropods from the latest Cretaceous of New Jersey and the Maastrichtian Appalachian fauna [PDF]

Royal Society Open Science, 2019
The faunal changes that occurred in the few million years before the Cretaceous–Palaeogene extinction are of much interest to vertebrate palaeontologists. Western North America preserves arguably the best fossil record from this time, whereas terrestrial
Chase Doran Brownstein
doaj   +1 more source

Pollination of Cretaceous flowers

Proceedings of the National Academy of Sciences, 2019
Insect pollination of flowering plants (angiosperms) is responsible for the majority of the world’s flowering plant diversity and is key to the Cretaceous radiation of angiosperms. Although both insects and angiosperms were common by the mid-Cretaceous, direct fossil evidence of insect pollination is lacking.
Tong Bao, Bo Wang, Jianguo Li, David Dilcher   +3 more
openaire   +2 more sources

A second species of non‐crocodyliform crocodylomorph from the Late Triassic fissure deposits of southwestern UK: Implications for locomotory ecological diversity in Saltoposuchidae

The Anatomical Record, EarlyView.
Abstract The Late Triassic–Early Jurassic fissures of the Bristol Channel area (southwest England and south Wales) are renowned for their diverse vertebrate faunas. These assemblages have yielded an array of predominantly small‐bodied forms that are crucial to our understanding of the early evolution of several major tetrapod clades.
Ewan H. Bodenham, Stephan N. F. Spiekman, Susannah C. R. Maidment, Paul Upchurch, Philip D. Mannion   +4 more
wiley   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

A new small-bodied azhdarchoid pterosaur from the Lower Cretaceous of England and its implications for pterosaur anatomy, diversity and phylogeny

, 2013
BackgroundPterosaurs have been known from the Cretaceous sediments of the Isle of Wight (southern England, United Kingdom) since 1870. We describe the three-dimensional pelvic girdle and associated vertebrae of a small near-adult pterodactyloid from the ...
Darren Naish (115424), Dyke Gareth, Naish, Darren, Naish Darren, Simpson Martin, Darren Naish, Dyke, Gareth, Simpson, Martin, Gareth Dyke, Martin Simpson, Martin Simpson (390859), Gareth Dyke (390860)   +11 more
core   +1 more source

Re-appraisal of two fossil Frullaniaceae species (Marchantiophyta, Porellales) from the mid-Cretaceous Burmese amber

, 2021
With more than 300 extant species, Frullaniaceae represent a species-rich clade of the predominantly epiphytic order Porellales, occurring in humid tropical and subtropical forests as well as temperate regions. Earliest fossils of Frullaniaceae are known
Li, Li-Qin, Feldberg, Kathrin, Li, Ya, Schneider, Harald, Wu, Peng-Cheng, Wang, Yong-Dong, Schmidt, Alexander R.   +6 more
core   +1 more source

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Geochemical and stable isotope patterns of calcite cementation in the Upper Cretaceous Chalk, Uk: Direct evidence from calcite-filled vugs in brachiopods [PDF]

Hu, X-F, Jeans, C.V. and Dickson, J.A.D. 2012. Geochemical and stable isotope patterns of calcite cementation in the Upper Cretaceous Chalk, UK: Direct evidence from calcite-filled vugs in brachiopods. Acta GeologicaPolonica, 62 (2), 143-172.
Dickson, Tony, Jeans, Christopher, Hu, Xiufang   +2 more
core   +1 more source

Elliptic Fourier analysis as a tool for the taxonomic identification of isolated theropod pedal phalanges

The Anatomical Record, EarlyView.
Abstract Studies of Upper Cretaceous deposits in North America have provided invaluable insights into the continental ecosystems of this time. Theropod (Saurischia, Dinosauria) pedal phalanges are commonplace in these deposits but can be difficult to identify at a finer taxonomic resolution.
Trystan M. Warnock‐Juteau, Stephanie M. Smith, Thomas M. Cullen   +2 more
wiley   +1 more source