Please use this identifier to cite or link to this item:
Title: Was There a Cambrian Explosion on Land? The Case of Arthropod Terrestrialization
Author: Tihelka, Erik
Howard, Richard J.
Cai, Chenyang
Lozano-Fernandez, Jesus
Keywords: Artròpodes
Cambrià (Període)
Issue Date: 17-Oct-2022
Publisher: MDPI
Abstract: Arthropods, the most diverse form of macroscopic life in the history of the Earth, originated in the sea. Since the early Cambrian, at least ~518 million years ago, these animals have dominated the oceans of the world. By the Silurian-Devonian, the fossil record attests to arthropods becoming the first animals to colonize land, However, a growing body of molecular dating and palaeontological evidence suggests that the three major terrestrial arthropod groups (myriapods, hexapods, and arachnids), as well as vascular plants, may have invaded land as early as the Cambrian-Ordovician. These dates precede the oldest fossil evidence of those groups and suggest an unrecorded continental 'Cambrian explosion' a hundred million years prior to the formation of early complex terrestrial ecosystems in the Silurian-Devonian. We review the palaeontological, phylogenomic, and molecular clock evidence pertaining to the proposed Cambrian terrestrialization of the arthropods. We argue that despite the challenges posed by incomplete preservation and the scarcity of early Palaeozoic terrestrial deposits, the discrepancy between molecular clock estimates and the fossil record is narrower than is often claimed. We discuss strategies for closing the gap between molecular clock estimates and fossil data in the evolution of early ecosystems on land
Note: Reproducció del document publicat a:
It is part of: Biology, 2022, vol. 11, num. 10, p. 1516
Related resource:
ISSN: 2079-7737
Appears in Collections:Articles publicats en revistes (Genètica, Microbiologia i Estadística)

Files in This Item:
File Description SizeFormat 
727586.pdf2.82 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons