Evolutionary Ecology and Coordinated Stasis of the Middle Devonian Hamilton Fauna

PIS将研究中泥盆世哈密尔顿和塔利群中底栖海洋无脊椎动物的共生谱系的进化，以确定生态如何影响进化的速度和方式。所选动物群的形态计量学将通过几个海侵/海退旋回确定受限生物相内谱系的变化程度。将对社区结构进行检查，以测试社区的稳定程度。汉密尔顿-塔利动物群的起源、稳定性和消亡将作为一个明显协调的或群落级别的停滞的案例研究，导致古代海洋底栖动物群落动态的一般模型。PIS还将制作一份照片地图集。

PIs will examine evolution of co-occurring lineages of benthic marine invertebrates from the well-studied Middle Devonian Hamilton and Tully groups, to determine how ecology influences rate and style of evolution. Morphometrics of selected fauna will establish degree of change of lineages within constrained biofacies through several transgressive/regressive cycles. Community structure will be examined to test the degree of community stability. The origin, stability and demise of the Hamilton-Tully fauna will be examined as a case study of apparently coordinated or community-level stasis, leading to a general model for the dynamics of ancient marine benthic communities. PIs will also produce a photo atlas.