Results 191 to 200 of about 201,757 (374)
Maritime midge radiations in the Pacific Ocean (Diptera: Chironomidae)
Systematic Entomology, Volume 48, Issue 1, Page 111-126, January 2023., 2023 We identify and confirm eight transitions from freshwater to the marine realm in the Chironomidae, based on a fossil‐calibrated phylogenetic framework. We recognise for the first time an unexpected but robust sister group of Pontomyia to be a new clade of exclusively marine species, Yaetanytarsus, forming the sister group to the diverse and global ...
Hongqu Tang +3 more
wiley +1 more source
Relationship of uranium and other trace elements to post-Cretaceous vulcanism [PDF]
, 1955 Robert Roy Coats
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, 1997 Cretaceous and Tertiary strata, which are widely exposed throughout the Operation Porcupine map area, consist of alternating shale- and sandstone-dominant formations. Sandstone-rich Lower Cretaceous strata tend to form a northeast-trending belt, extending from the Tuktoyaktuk Peninsula, through the northern Richardson Mountains, and across the northern
openaire +1 more source
... on the Cretaceous rocks of California [PDF]
American Journal of Sciencen ...
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Patterns of morphological evolution in the raptorial appendages of praying mantises
Insect Science, EarlyView.This study traces changes in the morphology of the forelegs across fossil and extant dictyopterans to understand their evolution from cursorial limbs to the raptorial morphologies of mantodeans. Two new mantodean specimens preserved in amber are described herein.
Alejandro Izquierdo‐López +5 more
wiley +1 more source
The Cretaceous-Eocene contact in the Atlantic and Gulf Coastal Plain [PDF]
, 1915 L. W. Stephenson
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On the cretaceous group in Norfolk [PDF]
Proceedings of the Geologists' Associationn ...
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Foraging by predatory ants: A review
Insect Science, EarlyView.This review focuses on ecological and behavioral characteristics of foraging in ants showing the wide diversity of cases. Most ants can feed on sugary substances, but some ground‐nesting species are strict predators. Except army ants during the nomadic phase, they are central‐place foragers that can recruit nestmates when necessary. They prey mostly on
Alain Dejean +5 more
wiley +1 more source
GEOCHEMICAL EVALUATION OF THE MIDDLE MAGDALENA BASIN, COLOMBIA
CT&F Ciencia, Tecnología & Futuro, 1997 The chemical composition of 25 crude oils from Tertiary reservoirs and 12 rock extracts from five organic-rich Cretaceous formations in the Middle Magdalena Basin, Colombia were studied in detail by geochemical methods in order to understand their ...
J. C RAMON, L DZOU, B GIRALDO
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