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- Publications
- Influence
Animal Evolution: Interrelationships of the Living Phyla
- C. Nielsen
- Biology
- 15 June 1995
Kingdom Animalia early animal radiation prelude: phylum choanoflagellata phylum porifera phylum placozoa eumetazoa phylum cnidaria tripoblastica phylum ctenophora phylum bilateria protostoma spiralia… Expand
Xenoturbella is a deuterostome that eats molluscs
- S. Bourlat, C. Nielsen, A. Lockyer, D. J. Littlewood, M. J. Telford
- Biology, Medicine
- Nature
- 21 August 2003
Xenoturbella bocki, first described in 1949 (ref. 1), is a delicate, ciliated, marine worm with a simple body plan: it lacks a through gut, organized gonads, excretory structures and coelomic… Expand
CLADISTIC ANALYSES OF THE ANIMAL KINGDOM
- C. Nielsen, N. Scharff, D. Eibye-Jacobsen
- Biology
- 1 April 1996
Abstract A recently published book on the phylogeny of the animal kingdom, written by the first author, provided a classification based on a ‘manual’ cladistic analysis at the phylum level. We have… Expand
The Development of the Brachiopod Crania (Neocrania) anomala (O. F. Müller)and its Phylogenetic Significance
- C. Nielsen
- Biology
- 1 March 1991
The freely spawned eggs of Crania go through radial cleavage, embolic gastrulation, and the posteroventral part of the archenteron forms mesoderm through modified enterocoely. The blastopore closes… Expand
Tentacle structure and filter-feeding in Crisia eburnea and other cyclostomatous bryozoans, with a review of upstream-collecting mechanisms
- C. Nielsen, H. U. Riisgård
- Biology
- 9 July 1998
The upstream-collecting filter-feeding mechanisms occurring in many aquatic organisms are not adequately descnbed. Tentacles of Crisia eburnea and other cyclostome bryozoans, with only lateral and… Expand
Origin and evolution of animal life cycles
- C. Nielsen
- Biology
- 1 May 1998
The ‘origin of larvae’ has been widely discussed over the years, almost invariably with the tacit understanding that larvae are secondary specializations of early stages in a holobenthic life cycle.
Studies on Danish entoprocta
- C. Nielsen
- Biology
- 1 May 1964
Abstract A survey of the literature on the Danish Entoprocta is given. Descriptions and figures are given of all Entoprocta, viz. 24 species, recorded from Danish waters. Seventeen of these are new… Expand
Structure and Function of Metazoan Ciliary Bands and Their Phylogenetic Significance
- C. Nielsen
- Biology
- 1 December 1987
Ciliated epithelia, especially the ciliary bands used in swimming and filter feeding, of representatives of the following phyla have been investigated: Porifera, Cnidaria, Annelida, Mollusca,… Expand
Testing the new animal phylogeny: a phylum level molecular analysis of the animal kingdom.
- S. Bourlat, C. Nielsen, A. Economou, M. J. Telford
- Biology, Medicine
- Molecular phylogenetics and evolution
- 1 October 2008
The new animal phylogeny inferred from ribosomal genes some years ago has prompted a number of radical rearrangements of the traditional, morphology based metazoan tree. The two main bilaterian… Expand
Control of Invasive Soybean Aphid, Aphis glycines (Hemiptera: Aphididae), Populations by Existing Natural Enemies in New York State, with Emphasis on Entomopathogenic Fungi
- C. Nielsen, A. Hajek
- Biology
- 1 October 2005
Abstract This study evaluated the diversity and abundance of existing natural enemies of soybean aphid, Aphis glycines L., under field conditions in New York State, with emphasis on entomopathogenic… Expand