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Outputs (156)

Neogene echinoids from the Cayman Islands, West Indies: regional implications (2015)
Journal Article
Donovan, S., Jones, B., & Harper, D. (2016). Neogene echinoids from the Cayman Islands, West Indies: regional implications. Geological Journal, 51(6), 864-879. https://doi.org/10.1002/gj.2703

The first fossil echinoids are recorded from the Cayman Islands. A regular echinoid, Arbacia? sp., the spatangoids Brissus sp. cf. B. oblongus Wright and Schizaster sp. cf. S. americanus (Clark), and the clypeasteroid Clypeaster sp. are from the Midd... Read More about Neogene echinoids from the Cayman Islands, West Indies: regional implications.

In deep water: a crinoid–brachiopod association in the Upper Oligocene of Antigua, West Indies (2015)
Journal Article
Donovan, S., Harper, D., & Portell, R. (2015). In deep water: a crinoid–brachiopod association in the Upper Oligocene of Antigua, West Indies. Lethaia: An International Journal of Palaeontology and Stratigraphy, 48(3), 291-298. https://doi.org/10.1111/let.12105

Extant brachiopods and stalked crinoids are found together in the deeper waters of the Caribbean Sea. Analogous brachiopod/crinoid associations have been reported from diverse palaeoenvironments in the Neogene of the region. Studied examples include... Read More about In deep water: a crinoid–brachiopod association in the Upper Oligocene of Antigua, West Indies.

Lower and Middle Ordovician conodonts of Laurentian affinity from blocks of limestone in the Rosroe Formation, South Mayo Trough, western Ireland and their palaeogeographic implication (2015)
Journal Article
their palaeogeographic implication. Geological Journal, 51(4), 584-599. https://doi.org/10.1002/gj.2659

The Middle Ordovician Rosroe Formation consists of some 1350 m of coarse, mainly siliciclastic to volcaniclastic sedimentary rocks, deposited in a submarine fan environment, and is restricted to the southern limb of the South Mayo Trough, western Ire... Read More about Lower and Middle Ordovician conodonts of Laurentian affinity from blocks of limestone in the Rosroe Formation, South Mayo Trough, western Ireland and their palaeogeographic implication.

The Hirnantian (Late Ordovician) brachiopod fauna of the East Baltic: Taxonomy of the key species (2015)
Journal Article
Hints, L., & Harper, D. (2015). The Hirnantian (Late Ordovician) brachiopod fauna of the East Baltic: Taxonomy of the key species. Acta Palaeontologica Polonica, 60(2), 395-420. https://doi.org/10.4202/app.2013.0010

Rhynchonelliformean brachiopods, belonging to 17 genera, are described from the East Baltic Porkuni Regional Stage, correlated with the global Hirnantian Stage. The brachiopod genera Paromalomena, Proboscizambon?, Kinnella, Drabo-via, and Coolinia, w... Read More about The Hirnantian (Late Ordovician) brachiopod fauna of the East Baltic: Taxonomy of the key species.

An earth system approach to understanding the end-Ordovician (Hirnantian) mass extinction (2014)
Book Chapter
Armstrong, H., & Harper, D. (2014). An earth system approach to understanding the end-Ordovician (Hirnantian) mass extinction. In G. Keller, & A. Kerr (Eds.), Volcanism, impacts, and mass extinctions : causes and effects (287-300). Geological Society of America. https://doi.org/10.1130/2014.2505%2814%29

The Hirnantian mass extinction is recognized as the first of the "big three" extinctions and, along with the end-Permian and end-Cretaceous events, is the result of an acceleration in biotic extinctions concomitant with a rise in originations. The Hi... Read More about An earth system approach to understanding the end-Ordovician (Hirnantian) mass extinction.

A suspension-feeding anomalocarid from the Early Cambrian (2014)
Journal Article
Vinther, J., Stein, M., Longrich, N., & Harper, D. (2014). A suspension-feeding anomalocarid from the Early Cambrian. Nature, 507(7493), 496-499. https://doi.org/10.1038/nature13010

Large, actively swimming suspension feeders evolved several times in Earth’s history, arising independently from groups as diverse as sharks, rays and stem teleost fishes1, and in mysticete whales2. However, animals occupying this niche have not been... Read More about A suspension-feeding anomalocarid from the Early Cambrian.