Titlebook: Experimental Approaches to Understanding Fossil Organisms; Lessons from the Liv Daniel I. Hembree,Brian F. Platt,Jon J. Smith Book 2014 Spr

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0275-0120 paleontological questions through creative, tangible, real-wPaleontologists and geologists struggle with research questions often complicated by the loss or even absence of key paleobiological and paleoenvironmental information. Insight into this missing data can be gained through direct exploration

encomiast

Crinoids Aweigh: Experimental Biomechanics of , Holdfastsom anchors deployed on muddy bottoms. Plaster casts of the . holdfast were used to quantify the actual forces involved in penetrating, being pulled out of, or dragged across soft substrates. The forces were measured using a digital force gauge mounted on a motorized test stand. Substrates used inclu

Biomarker

Reservation

Relationships of Internal Shell Features to Chemosymbiosis, Life Position, and Geometric Constraints along with two other “lucinoid” species, one of which is chemosymbiotic. Species demonstrated significant shape differences in both a canonical variates analysis (CVA) and a series of discriminate function analyses. For all but two species, the first canonical variates (CV) axis exhibits strong pos

hermitage

Modern Analogs for the Study of Eurypterid Paleobiology analog for other aspects of eurypterid paleobiology, including reproduction and whether eurypterids were active predators, is a matter of discussion. The lack of a single, clear eurypterid analog from among extant chelicerates may reflect that eurypterids occupied an ecological niche intermediate b

SENT

Spongy-Bone

The Relationship Between Modern Mollusk Assemblages and Their Expression in Subsurface Sediment in atire sedimentary package resulting in a largely homogeneous section devoid of subsurface shell beds. The one exception to that pattern is a single shelly lag found at the bottom of the sediment package resting on the hard pre-Holocene surface. Most importantly, we find that the lag fauna does not re

faction

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Using X-ray Radiography to Observe Fe Distributions in Bioturbated Sediment from the overlying oxic seawater, the ferric iron is biologically reduced to Fe.(via bacterial iron reduction) where it repeats Step 2. The pyrite remains stable unless exposed again to oxidizing conditions, such as later bioturbation. The inchoate nodules appear to form in less than a decade. Inte

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