Results 21 to 30 of about 287 (128)

Ediacaran skeletal metazoan interpreted as a lophophorate [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2015
While many skeletal biomineralized genera are described from Ediacaran (635–541 million years ago, Ma) strata, none have been suggested to have an affinity above the Porifera–Cnidaria metazoan grade. Here, we reinterpret the widespread terminal Ediacaran (approx. 550–541 Ma) sessile goblet-shapedNamacalathusas a triploblastic eumetazoan.Namacalathushas
Zhuravlev, A. Yu., Wood, R. A., Penny, A. M.   +2 more
openaire   +3 more sources

On some frenulate species (Annelida: Polychaeta: Siboglinidae) from mud volcanoes in the Gulf of Cadiz (NE Atlantic)

Scientia Marina, 2008
Collections of Frenulata made by the RV Professor Logachev in the Gulf of Cadiz in 2006 contain two new species, one belonging to the genus Spirobrachia, and another that was assigned to a new genus. Spirobrachia tripeira n. sp.
Ana Hilário, Marina R. Cunha
doaj   +1 more source

LATE ORDOVICIAN BRACHIOPOD RONGATRYPA XICHUANENSIS FROM XICHUAN, HENAN PROVINCE, CENTRAL CHINA

Rivista Italiana di Paleontologia e Stratigrafia, 2019
The atrypide brachiopod Rongatrypa Popov & Cocks, 2014 is one of the early members of the subfamily Clintonellinae. This genus was previously known only from the Kazakh terranes. Here, we reassign a species to the genus, Rongatrypa xichuanensis (Xu, 1996)
YU-CHEN ZHANG, REN-BIN ZHAN, COLIN D. SPROAT, BING HUANG   +3 more
doaj   +1 more source

MASS EXTINCTIONS AND CLADE EXTINCTIONS IN THE HISTORY OF BRACHIOPODS: BRIEF REVIEW AND A POST-PALEOZOIC CASE STUDY

Rivista Italiana di Paleontologia e Stratigrafia, 2019
Brachiopods are a key group in Phanerozoic marine diversity analyses for their excellent fossil record and distinctive evolutionary history. A genus-level survey of raw diversity trajectories allows the identification of the Brachiopod Big Five, episodes
ATTILA VÖRÖS, ÁDÁM T. KOCSIS, JÓZSEF PÁLFY   +2 more
doaj   +1 more source

A soft-bodied lophophorate from the Silurian of England [PDF]

Biology Letters, 2010
Soft-bodied taxa comprise an important component of the extant lophophorate fauna, but convincing fossils of soft-bodied lophophorates are extremely rare. A small fossil lophophorate, attached to a brachiopod dorsal valve, is described from the Silurian (Wenlock Series) Herefordshire Lagerstätte of England.
Sutton, MD, Briggs, D, Siveter, D, Siveter, D   +3 more
openaire   +4 more sources

Testing Species Assignments in Extant Terebratulide Brachiopods: A Three-dimensional Geometric Morphometric Analysis of Long-Looped Brachidia.

PLoS ONE, 2019
Species of terebratulide brachiopods have been largely characterized qualitatively on the basis of morphology. Furthermore, species-level morphological variability has rarely been analyzed within a quantitative framework. The objective of our research is
Natalia López Carranza, Sandra J Carlson   +1 more
doaj   +1 more source

Waterbirds and Other Drivers of Endoparasite Communities Across a Hierarchy of Spatial Scales

Freshwater Biology, Volume 71, Issue 4, April 2026.
ABSTRACT Understanding drivers of parasite community structure is compromised by poor sampling and historical focus on one host‐one parasite systems. Yet parasites are ubiquitous and co‐infections are common. This study aimed to identify how various drivers, ranging from landscape scale (waterbird movements, hydrological connectivity, region, host ...
Sarah Nichols, Paolo Ruggeri, Henrietta Pringle, Gavin Siriwardena, Hanna Hartikainen, Beth Okamura   +5 more
wiley   +1 more source

Palaeoecology of Middle Devonian epizoans and their Paraspirifer hosts

Palaeontology, Volume 69, Issue 2, 2026.
Abstract The Silica Shale brachiopod, Paraspirifer bownockeri, of Ohio and Michigan, USA, preserves a unique window into Middle Devonian communities, as individuals hosted numerous epibionts. Herein, we use qualitative and quantitative methods to test hypotheses regarding the palaeoecology of these brachiopod hosts and their epibionts.
Haley N. Vantoorenburg, Lian Anderson, Sydney Orman, Jackson Eccles, John Warren Huntley, Jennifer E. Bauer, Sarah L. Sheffield   +6 more
wiley   +1 more source

Evolution of the Loop and Lophophore in Terebratuloid Brachiopods [PDF]

Evolution, 1956
The contribution of paleontology to the study of evolution must come primarily through exposition of the actual course of organic development as revealed by fossil remains. Groups vary widely in the excellence of their fossil record, however, and it is evident that relatively few among the host of plant and animal lineages are well suited for ...
openaire   +1 more source

Occurrence, Abundance, and Diversity of Gill Fouling Organisms in Snow Crab, Chionoecetes opilio (O. Fabricius, 1788), (Decapoda, Brachyura, and Oregoniidae) in the Northwestern Atlantic Ocean, Canada

International Journal of Zoology, Volume 2026, Issue 1, 2026.
Gill fouling organisms (GFO) in snow crab (Chionoecetes opilio) were identified and grouped into 10 taxons, representing 7 phyla. An unknown harpacticoid copepod species (Coullia sp.) was described and the presence of a kinorhyncha species (Echinoderes sp.) was first observed.
Mikio Moriyasu, Andrew B. Harbicht, Renée N. Allain, Ray P. Gerber, Katherine J. Landry, Joao Pedro Barreiros   +5 more
wiley   +1 more source