Results 101 to 110 of about 9,836 (232)
Crinoid phylogeny: a preliminary analysis (Echinodermata: Crinoidea) [PDF]
, 2004 We describe the first molecular and morphological analysis of extant crinoid high-level inter-relationships. Nuclear and mitochondrial gene sequences and a cladistically coded matrix of 30 morphological characters are presented, and analysed by ...
Eleaume, M. +7 more
core +1 more source
AnimalsAbatus is a genus of irregular brooding sea urchins to the Southern Ocean. Among the 11 described species, three shared morphological traits and present an infaunal lifestyle in the infralittoral from the Subantarctic province; A. cavernosus in Patagonia,
Fernando Moya +6 more
doaj +1 more source
Mitochondrial DNA. Part B. Resources, 2020 The Crinoidea is the ancestor class of echinoderm classes, whereas its evolution history remains the least studied in extant echinoderms. In this study, a complete 15,772 bp genome for the crinoid echinoderm, Florometra species (Echinodermata, Crinoidea)
Sang-Eun Nam +2 more
doaj +1 more source
Internalized Evolutionary Inertia on Body Plan Evolution
Evolution &Development, Volume 28, Issue 2, June 2026.Animal development appears to intrinsically bias phenotypic evolution, though the exact mechanism is unclear. This review discusses potential mechanisms by which animal embryogenesis limits phenotypic diversification and considers whether inherent evolutionary inertia could allow us to predict future evolutionary paths.
Wenxin Zeng, Naoki Irie
wiley +1 more source
, 2016 The Furongian (late Cambrian) is an extremely poorly sampled time in the history of echinoderms, with only few localities yielding complete specimens.
Sumrall, Colin D. +4 more
core +1 more source
The evolution and variety of RFamide-type neuropeptides: insights from deuterostomian invertebrates
Frontiers in Endocrinology, 2014 Five families of neuropeptides that have a C-terminal RFamide motif have been identified in vertebrates: 1. gonadotropin-inhibitory hormone (GnIH), 2. neuropeptide FF (NPFF) 3. pyroglutamylated RFamide peptide (QRFP), 4. prolactin-releasing peptide (PrRP)
Maurice Richard Elphick +1 more
doaj +1 more source
Journal of Biogeography, Volume 53, Issue 6, June 2026.ABSTRACT Aim The biogeography and evolution of South African sea cucumbers have been previously explored; however, these aspects lack detailed study. This study (1) explores the biogeography of sea cucumbers along the coastline of South Africa (SA) and (2) presents a preliminary molecular phylogeny based on the mitochondrial 16S marker.
Jessica S. Victorino +3 more
wiley +1 more source
Divergences at COI for echinoderm species from multiple oceans.
, 2016 Divergences at COI for echinoderm species from multiple oceans.
Kara K. S. Layton (3357269) +2 more
core +1 more source
AnimalsIntertidal organisms experience daily environmental fluctuations, including changes in temperature, UV radiation, and aerial exposure during low tide, requiring physiological strategies for survival.
Tatiana M. Pereira +4 more
doaj +1 more source