Treatise on Invertebrate Paleontology
Treatise on invertebrate paleontology , Treatise on invertebrate paleontology , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
A model for niche differentiation in Lower Mississippian crinoid communities
- W. Ausich
- Environmental Science, Geography
- 1 March 1980
Crinoid niche differentiation is examined within Lower Mississippian epifaunal suspension-feeding communities to suggest that niches were established and maintained by diffuse interspecific competition.
The “Age of Crinoids”: A Mississippian Biodiversity Spike Coincident with Widespread Carbonate Ramps
Abstract Crinoids reached their highest generic richness and overall abundance during the Mississippian, which thus has been dubbed the Age of Crinoids. The causes are hypothesized to be from the…
Phylogeny of Arenig to Caradoc crinoids (Phylum Echinodermata) and suprageneric classification of the Crinoidea
- W. Ausich
- 1 June 1998
Early phylogeny and subclass division of the Crinoidea (Phylum Echinodermata)
- W. Ausich
- Environmental ScienceJournal of Paleontology
- 1 May 1998
The topology from well-resolved trees of this early crinoid radiation indicates that the Crinoidea should be subdivided into six subclasses, and a new subclass and new order, Aethocrinea and Aethocrinida, are proposed for crinoids with four circlets of plates in the aboral cup.
Persistent predator–prey dynamics revealed by mass extinction
- L. Sallan, T. Kammer, W. Ausich, L. A. Cook
- Environmental Science, GeographyProceedings of the National Academy of Sciences
- 2 May 2011
It is shown that the end-Devonian Hangenberg event was a natural experiment in which vertebrate predators were both removed and added to an otherwise stable prey fauna, revealing specific and persistent trophic interactions and suggesting major crinoid evolutionary phenomena might be linked to vertebrate predation.
Macroevolutionary transition in crinoids following the Late Ordovician extinction event (Ordovician to Early Silurian)
Did changes in atmospheric CO2 coincide with latest Ordovician glacial-interglacial cycles?
Biotic Interactions among Recent and among Fossil Crinoids
The evolutionary history of biotic interactions of crinoids provides evidence that predation and competition have played significant roles in crinoid evolution.
Oral Region Homologies in Paleozoic Crinoids and Other Plesiomorphic Pentaradial Echinoderms
Newly recognized oral region homologies are presented, based on the Universal Elemental Homology model for skeletal plates, in a wide range of fossil taxa for exploring branching order among stem groups on the echinoderm tree of life.