Results 171 to 180 of about 183,367 (338)

Osteohistology of the Maastrichtian, small‐bodied elasmosaurid Kawanectes lafquenianum (Sauropterygia; Plesiosauria)

open access: yesJournal of Anatomy, EarlyView.
The present contribution brings new osteohistological information on the postcranial bones of Kawanectes lafquenianum and shed some light on Plesiosauria microanatomy and microstructure. The bone architecture shows variability between forelimbs and hindlimbs.
M. E. Pereyra, J. O'Gorman, A. Chinsamy
wiley   +1 more source

Almost billfish: convergent longirostry, micro‐dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy

open access: yesJournal of Anatomy, EarlyView.
A fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Giovanni Serafini   +5 more
wiley   +1 more source

Evolutionary implications of a deep-time perspective on insect pollination. [PDF]

open access: yesBiol Rev Camb Philos Soc
ABSTRACT Plant pollination by insects represents one of the most transformative and iconic ecological relationships in the natural world. Despite tens of thousands of papers, as well as numerous books, on pollination biology published over the past 200 years, most studies focused on the fossil record of pollinating insects have only been published in ...
Peris D   +10 more
europepmc   +2 more sources

Palaeohistology and life history of the early Palaeocene taeniodont Conoryctes comma (Mammalia: Eutheria)

open access: yesJournal of Anatomy, EarlyView.
Determining the life histories of mammals after the extinction of the dinosaurs is key to understanding why they rose so quickly to terrestrial dominance. This study analyses growth in a member of a key mammal group that traversed the extinction boundary.
Gregory F. Funston   +3 more
wiley   +1 more source

Reminiscent of the pre‐diatom? A hitherto undescribed scaly bolidophyte Lepidoparma frigida gen. et sp. nov. in a new order Lepidoparmales based on morphology, phylogeny, and ecology

open access: yesJournal of Phycology, EarlyView.
Abstract The class Bolidophyceae, which consists of small phytoplankton distributed worldwide, is the sister group of diatoms. This class has contained only one order, the Parmales, until now. In this study, we established a new order Lepidoparmales Kamakura & S.Sato ord. nov. and a new family Lepidoparmaceae Kamakura & S.Sato fam.
Shiho Kamakura   +8 more
wiley   +1 more source

Revised phylogenomic analysis and Cretaceous fossil evidence reveal new insights into evolution of Scirtinae (Coleoptera: Scirtidae)

open access: yesJournal of Systematics and Evolution, EarlyView.
The molecular phylogeny of Scirtinae based on ultraconserved elements is reanalyzed using the site‐heterogeneous model CAT‐GTR+G4. A new scirtine fossil, Serracyphon philipsi gen. et sp. nov., is reported from mid‐Cretaceous Kachin amber, and its placement is evaluated in light of the updated phylogenomic framework of Scirtinae.
Yan‑Da Li   +3 more
wiley   +1 more source

Selective sampling of asteroids, the Moon, and Mars: Factors affecting the numerical abundances of members of meteorite groups

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Meteorite collection inventories show that many related meteorite groups have very different numerical abundances (e.g., lunar versus Martian meteorites; Eagle Station pallasites versus main‐group pallasites; eucrites versus diogenites; ungrouped Antarctic irons versus ungrouped non‐Antarctic irons; carbonaceous chondrite‐related (CC) iron ...
Alan E. Rubin
wiley   +1 more source

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