Results 211 to 220 of about 4,201,675 (269)

Recognition of fossil keratose sponges in carbonates using petrographic and machine‐learning classification

open access: yesSedimentology, Volume 73, Issue 6, Page 2246-2280, October 2026.
ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee   +2 more
wiley   +1 more source

Alluvial ridge morphology on avulsing rivers

open access: yesSedimentology, Volume 73, Issue 6, Page 2311-2337, October 2026.
ABSTRACT Alluvial ridges are built by preferential channel‐belt deposition and control river avulsions, yet a systematic analysis of their morphology has been missing. To address this gap, we analyse a globally distributed dataset of 8970 alluvial ridge flanks on 14 different rivers.
James H. Gearon, Douglas A. Edmonds
wiley   +1 more source

An Eocene shallow water isselicrinid sea lilies from the Northern Hemisphere. [PDF]

open access: yesSci Rep
Salamon MA   +7 more
europepmc   +1 more source

Deep water vetulicolians from the lower Cambrian of China. [PDF]

open access: yesPeerJ
Ma S   +5 more
europepmc   +1 more source

Early hominins from Morocco basal to the Homo sapiens lineage. [PDF]

open access: yesNature
Hublin JJ   +28 more
europepmc   +1 more source

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