Echinodermata (Phylum) – Multiple Choice Test Name

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Echinodermata (Phylum) – Multiple Choice Test Name

Echinodermata (Phylum) – Multiple Choice Test ©Sheri Amsel • www.exploringnature.org Name: _________________________ Date: __________ Class: _________________ 1 5 All the following animals are Starfish eat: Echinoderms, EXCEPT: A seaweed and kelp. A starfish B clams, oysters and scallops. B octopus C whales. C sand dollar D fish. D sea urchin E sea cucumber 2 Echinoderms are found in: 6 Starfish eat by: A desert habitats. A wrapping its arms around its prey and B forest habitats. squeezing. C ocean habitats. B biting it into bits before swallowing it. D all habitats. C pushing their stomach out of their mouths to dissolve prey before eating it. D They don’t eat. Echinoderms: 3 7 To defend against predators, sea urchins have: A are all radially symmetrical. B have an internal skeleton called A sharp spines. endoskeleton. B stinging tentacles. C breathe through a kind of gills. C big teeth. D all of the above. D none of the above. 4 8 Echinoderm adults: Sand dollars and sea urchins have all of the following, EXCEPT: A move on the sea floor on “tube feet” B are free-swimming A Pores that form a flower pattern in C are attached to the sea floor (sessile). their skeleton. D all of the above. B A flattened endoskeleton. C Sharp spines they use to burrow in the sand. D All of the above. Echinodermata (Phylum) – Multiple Choice Test KEY ©Sheri Amsel • www.exploringnature.org Name: _________________________ Date: __________ Class: _________________ 1 5 All the following animals are Starfish eat: Echinoderms, EXCEPT: A seaweed and kelp. A starfish B clams, oysters and scallops. B octopus C whales. C sand dollar D fish. D sea urchin E sea cucumber 2 Echinoderms are found in: 6 Starfish eat by: A desert habitats. A wrapping its arms around its prey and B forest habitats. squeezing. C ocean habitats. B biting it into bits before swallowing it. D all habitats. C pushing their stomach out of their mouths to dissolve prey before eating it. D They don’t eat. Echinoderms: 3 7 To defend against predators, sea urchins have: A are all radially symmetrical. B have an internal skeleton called A sharp spines. endoskeleton. B stinging tentacles. C breathe through a kind of gills. C big teeth. D are all of the above. D none of the above. 4 8 Echinoderm adults: Sand dollars and sea urchins have all of the following, EXCEPT: A move on the sea floor on “tube feet” B are free-swimming A Pores that form a flower pattern in C are attached to the sea floor (sessile). their skeleton. D all of the above. B A flattened endoskeleton. C Sharp spines they use to burrow in the sand. D All of the above..

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Echinoidea Clypeasteroidea
Biodiversity Journal, 2014, 5 (2): 291–358 Analysis of some astriclypeids (Echinoidea Clypeast- eroida) Paolo Stara1* & Luigi Sanciu2 1Centro Studi di Storia Naturale del Mediterraneo - Museo di Storia Naturale Aquilegia, Via Italia 63, Pirri-Cagliari and Geomuseo Monte Arci, Masullas, Oristano, Sardinia, Italy; e-mail: [email protected] *Corresponding author The systematic position of some astriclypeid species assigned through times to the genera Amphiope L. Agassiz, 1840 and Echinodiscus Leske, 1778 is reviewed based on the plating ABSTRACT pattern characteristics of these two genera universally accepted, and on the results of new studies. A partial re-arrangement of the family Astriclypeidae Stefanini, 1912 is herein pro- posed, with the institution of Sculpsitechinus n. g. and Paraamphiope n. g., both of them char- acterized by a peculiar plating-structure of the interambulacrum 5 and of the ambulacra I and V. Some species previously attributed to Amphiope and Echinodiscus are transferred into these two new genera. Two new species of Astriclypeidae are established: Echinodiscus andamanensis n. sp. and Paraamphiope raimondii n. sp. Neotypes are proposed for Echin- odiscus tenuissimus L. Agassiz, 1840 and E. auritus Leske, 1778, since these species were still poorly defined, due to the loss of the holotypes and, for E. auritus, also to the unclear geographical/stratigraphical information about the type-locality. A number of additional nom- inal fossil and extant species of "Echinodiscus" needs revision based on the same method. KEY WORDS Astriclypeidae; Amphiope; Paraamphiope; Echinodiscus; Sculpsitechinus; Oligo-Miocene. Received 28.02.2014; accepted 14.03.2014; printed 30.06.2014 Paolo Stara (ed.). Studies on some astriclypeids (Echinoidea Clypeasteroida), pp.
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ENL 10.Pdf (1.0
The Echinoderms Newsletterl' No. 10. January, 1979 Prepar~d in the Department of Invertebrate Zoology (Echinoderms), National Museum of Natural History, Smithsonian Institution, Washington D.C. 20560, u.S.A. 1978 waS quite a year for the echinoderms. There were two international echinoderm meetings. Acanthaster planci made the newspapers again, as a result of its coral chomping activities on various South Pacific islands. t~;'2ric3nscientists studied sea cucumber culturing techniques in China, In the middle of all this excitement, we neglected to issue a Newsletter. This time, we're six months late. We're sorry about the poor quality of many of the pages in this issue. A bad batch of mimeograph stencils coupled with a temperamental machine caused us some headaches. J;vehope to do better next time. We have the impression that our mailing list contains a good deal of 11dead wood", names and addresses of people who for one reason or another are no longer interested in receiving the Newsletter. In order to reduce our work load and reduce the cost of production, we want to remove unu~nted names from the mailing list. Thus, we ask you to complete and return the enclosed form (see last page of Newsletter) if you wish to hm,'e your nam3 retained on the Mailing list. We're sorry to cauae you this trouble, but trust you7ll understand our aims. David 1. Pawson lThe Echinoderms Newsletteris not intended to be a part of the scientific literature, and should not be cited, abstracted, or reprinted as a published docum~nt. - Items of interec;'~.
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Florida Fossil Invertebrates 2 (Pdf)
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Sand Dollar (Echinoidea: Clypeasteroida: Monophorasteridae)
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Echinoidea: Clypeasteroida) from Patagonia
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Echinodermata
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Williamson and Boerboom, 1:4 http://dx.doi.org/10.4172/scientificreports.230 Open Access Open Access Scientific Reports Scientific Reports Research Article OpenOpen Access Access Experimental Hybrids between Ascidians and Sea Urchins Donald I Williamson1* and Nicander G J Boerboom2 1School of Biological Sciences, University of Liverpool L69 3BX, UK 2Spechtstraat 9, 6921 KP Duiven, the Netherlands Abstract The larval transfer hypothesis claims that larvae did not evolve gradually from the same stocks as adults but were transferred by hybridization from animals in distantly related taxa. Experimental hybrids between organisms from different phyla demonstrate the feasibility of crossing distantly related animals and they provide material to study the morphologies, chromosomes and genomes of hybrids. Untreated eggs of the ascidian Ascidia mentula mixed with concentrated sperm of the sea urchin Echinus esculentus divided into 33 of 63 experiments. One experiment yielded 3,000 eight-armed pluteus larvae, a minority of which developed into sea urchins. Two pentaradial sea urchins and one tatraradial sea urchin survived more than four years and produced fertile eggs. The majority of the 3,000 plutei resorbed their arms to become spheroids. Forms resembling tadpoles developed within some of these spheroids, but no tadpoles emerged. Eggs of the sea urchin Psammechinus miliaris, pretreated with acid seawater before mixing with dilute sperm of the ascidian Ascidiella aspersa, developed into four-armed pluteus larvae, all of which resorbed their arms to become bottom-living spheroids that divided repeatedly. Some of these spheroids developed inclusions with ascidian features, but they did not develop further. Many spheroids grew into irregular shapes; others divided to produce more spheroids.
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Phylum Echinodermata
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Swiss Journal of Palaeontology (2018) 137:389–404 https://doi.org/10.1007/s13358-018-0164-y (0123456789().,-volV)(0123456789().,-volV) REGULAR RESEARCH ARTICLE A new fossil species of Clypeaster (Echinoidea) from Malaysian Borneo and an overview of the Central Indo-Pacific echinoid fossil record 1,2 3 Morana Mihaljevic´ • Alana J. Rosenblatt Received: 7 March 2018 / Accepted: 31 August 2018 / Published online: 22 September 2018 Ó Akademie der Naturwissenschaften Schweiz (SCNAT) 2018 Abstract A complete, but fractured and crushed, echinoid corona from early to middle Miocene of Sarawak, Malaysia, is described as a new species, Clypeaster sarawakensis nov. sp. Although similar to modern C. rarispinus, the new species shows a distinct set of characters including petal length, periproct position and gut coiling. The discovery of a new Clypeaster,a genus characterised by a high preservation potential, illustrates that little is known about echinoid evolution and diver- sification in the Central Indo-Pacific, which features as a biodiversity hotspot since the Oligocene. Besides describing Clypeaster sarawakensis, we also compiled the known Central Indo-Pacific echinoid fossil record and used it to examine the Cenozoic diversity of echinoids. The overall diversity throughout the Cenozoic, and especially the rapid diversity increase at the Oligocene–Miocene boundary, corresponds to diversity trends observed in other taxa from the region. Keywords Hotspot Á Tethys Á Miocene Á Cenozoic Á Preservation potential Á Computed tomography Introduction well established by the early Miocene (Harzhauser et al. 2007; Renema et al. 2008). Shallow water, tropical coral The Central Indo-Pacific has been a hotspot of marine reefs provided the foundation for its diversity by offering biodiversity for the last 28 My (Mihaljevic´ et al.
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