Goniodiscus (plant)
Goniodiscus may refer to: * ''Goniodiscus'' (plant), a genus of plants in the family Celastraceae * ''Goniodiscus'' (mollusc), an extinct genus of molluscs in the order Ceratitida, family unknown * ''Goniodiscus'', a genus of echinoderms in the family Oreasteridae, synonym of '' Culcita'' * ''Goniodiscus'', an extinct genus of trilobites in the family Calodiscidae, synonym of ''Calodiscus ''Calodiscus'' is a genus of Eodiscinid trilobite in the family Calodiscidae. It lived during the late Lower Cambrian, with remains found in Canada (Newfoundland & Labrador), the United States (Massachusetts, New York State), Greenland, The Unite ...

Celastraceae
The Celastraceae (staff-vine or bittersweet) are a family of 97 genera and 1,350 species of herbs, vines, shrubs and small trees, belonging to the order Celastrales. The great majority of the genera are tropical, with only ''Celastrus'' (the staff vines), ''Euonymus'' (the spindles) and ''Maytenus'' widespread in temperate climates, and '' Parnassia'' (bog-stars) found in alpine and arctic climates. Of the 97 currently recognized genera of the family Celastraceae, 19 are native to Madagascar and these include at least 57 currently recognized species. Six of these 19 genera (''Brexiella'', '' Evonymopsis'', '' Hartogiopsis'', ''Polycardia'', ''Ptelidium'', and ''Salvadoropsis'') are endemic to Madagascar. Genera A complete list of the genera is: * '' Acanthothamnus'' * '' Allocassine'' * '' Anthodon'' * ''Apatophyllum'' * ''Apodostigma'' * ''Arnicratea'' * ''Bequaertia'' * ''Brassiantha'' * '' Brexia'' * ''Brexiella'' * ''Campylostemon'' * ''Canotia'' – crucifixion thorn * ...
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Goniodiscus (mollusc)
Goniodiscus may refer to: * ''Goniodiscus'' (plant), a genus of plants in the family Celastraceae * ''Goniodiscus'' (mollusc), an extinct genus of molluscs in the order Ceratitida, family unknown * ''Goniodiscus'', a genus of echinoderms in the family Oreasteridae, synonym of '' Culcita'' * ''Goniodiscus'', an extinct genus of trilobites in the family Calodiscidae, synonym of ''Calodiscus ''Calodiscus'' is a genus of Eodiscinid trilobite in the family Calodiscidae. It lived during the late Lower Cambrian, with remains found in Canada (Newfoundland & Labrador), the United States (Massachusetts, New York State), Greenland, The Unite ...

Ceratitida
Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Pale ..., the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammonites. Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic. Taxonomy * Ceratitida ** Ceratitoidea ** Choristoceratoidea ** Clydonitoide ...
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Culcita (echinoderm)
''Culcita'' is a genus of cushion stars. They are found in tropical waters. Some are kept in home aquariums. Description and characteristics These are very particular stars, plump and pillow-shaped, more or less pentagonal. Their five arms have waned to only obtuse angles (and sometimes rounded off or truncated). They can measure up to 30 cm in diameter, and are typical of Indo-Pacific coral reefs, where they feed on benthic invertebrates and coral. Two species '' Culcita novaeguineae'' and ''Culcita schmideliana'' are extremely similar and almost impossible to differentiate by sight, except that ''C. schmideliana'' has larger tubercles, that are normally absent from papular areas (though both species can also be naked). They are thus distinguished mostly by their area of distribution: ''C. schmideliana'' lives in the Indian Ocean (from Africa to the Maldives), and ''C. novaeguineae'' in Oceania and the Pacific Ocean. The third species, ''C. coriacea'', lives in the Red ...
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