The Ordovician diversification of sea urchins: systematics of the ...
WEBApr 14, 2022 · Abstract. The echinoids of the order Bothriocidaroida represent the initial burst of sea urchin diversification. They were the first echinoids to achieve widespread biogeographical dispersal and achieved high levels of species richness compared to other clades of stem group echinoids.
Sea urchin - Wikipedia
WEBThe fossil record of the Echinoids dates from the Ordovician period, some 450 million years ago. The closest echinoderm relatives of the sea urchin are the sea cucumbers (Holothuroidea), which like them are deuterostomes, a clade that includes the chordates.
The Ordovician diversification of sea urchins: systematics of the ...
WEBApr 14, 2022 · A leading hypothesis for this Great Ordovician Biodiversification Event is that cooling of the Ordovician climate lowered sea surface temperatures into the thermal tolerance window of many...
Living Fossils: Echinoderms - Digital Atlas of Ancient Life
WEBEchinoderms—from Greek meaning “spiny skin”—are one of the most ancient invertebrate animal groups, with origins dating all the way back to the Cambrian explosion around 540 million years ago. Echinoderms include familiar marine life like sea stars (or, starfish), sea urchins, and sea cucumbers.
Echinoidea - Digital Atlas of Ancient Life
WEBMay 27, 2020 · Fossil record: Ordovician to Recent. Overview. Echinoidea comes from the Greek word ‘echinos’ meaning “spiny” and includes the sea urchins, sand dollars, and heart urchins. Echinoids are the sister taxa to holothuroidians within the Echinozoa clade.
A phylogenomic resolution of the sea urchin tree of life
WEBDec 13, 2018 · Echinoidea is a clade of marine animals including sea urchins, heart urchins, sand dollars and sea biscuits. Found in benthic habitats across all latitudes, echinoids are key components of marine communities such as coral reefs and kelp forests.
The Ordovician diversification of sea urchins: systematics of the ...
WEBMay 11, 2022 · Abstract. The echinoids of the order Bothriocidaroida represent the initial burst of sea urchin diversification. They were the first echinoids to achieve widespread biogeographica
Reorganization of sea urchin gene regulatory networks at least …
WEBOct 21, 2015 · Systematic comparison of sea urchin and sea star developmental gene regulatory networks explains how novelty is incorporated in early development
Echinoids - British Geological Survey
WEBEchinoids. Echinoids have lived in the seas since the Late Ordovician, about 450 million years ago, which is about 220 million years before dinosaurs appeared. The remains and traces of these animals were buried in sediment …
The Ordovician diversification of sea urchins: systematics of the ...
WEBThe Ordovician diversification of sea urchins: systematics of the Bothriocidaroida (Echinodermata: Echinoidea) Buy Article: $68.00 + tax (Refund Policy) Authors: Thompson, Jeffrey R. 1; Cotton, Laura J. 2; Candela, Yves 3; Kutscher ...
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