The Neognathostomata are a superorder of sea urchins.
Description and characteristics
They are distinguished from other sea urchins by their irregular shape and a highly modified feeding lantern. The group includes the well known sand dollars, as well as some less familiar and extinct forms.
Taxonomy
- family Apatopygidae<small> Kier, 1962</small>
- family Archiaciidae<small> Cotteau & Triger, 1869</small> âÂÂ
- order Cassiduloida
- superfamily Cassidulina <small>(Philip, 1963b)</small>
- family Cassidulidae <small>(L. Agassiz and Desor, 1847)</small>
- superfamily Neolampadina <small>(Philip, 1963b)</small>
- family Neolampadidae <small>(Lambert, 1918a)</small>
- family Pliolampadidae <small>(Kier, 1962)</small> âÂÂ
- order Clypeasteroida <small>A.Agassiz, 1872</small> ("sand dollars")
- suborder Clypeasterina
- family Clypeasteridae <small>L. Agassiz, 1835</small>
- family Fossulasteridae <small>Philip & Foster, 1971</small> âÂÂ
- family Scutellinoididae <small>Irwin, 1995</small> âÂÂ
- family Conoclypeidae <small>von Zittel, 1879</small> âÂÂ
- family Faujasiidae <small>Lambert, 1905</small> âÂÂ
- family Oligopygidae <small>Duncan, 1889</small> âÂÂ
- family Plesiolampadidae <small>Lambert, 1905</small> âÂÂ
- suborder Scutellina
- infraorder Laganiformes
- family Echinocyamidae <small>Lambert & Thiéry, 1914</small>
- family Fibulariidae <small>Gray, 1855</small>
- family Laganidae <small>Desor, 1858</small>
- infraorder Scutelliformes
- family Echinarachniidae <small>Lambert in Lambert & Thiéry, 1914</small>
- family Eoscutellidae <small>Durham, 1955</small> âÂÂ
- family Protoscutellidae <small>Durham, 1955</small> âÂÂ
- family Rotulidae <small>Gray, 1855</small>
- superfamily Scutelloidea <small>Gray, 1825</small>
- family Abertellidae <small>Durham, 1955</small> âÂÂ
- family Astriclypeidae <small>Stefanini, 1912</small>
- family Dendrasteridae <small>Lambert, 1900</small>
- family Mellitidae <small>Stefanini, 1912</small>
- family Monophorasteridae <small>Lahille, 1896</small> âÂÂ
- family Scutasteridae <small>Durham, 1955</small> âÂÂ
- family Scutellidae <small>Gray, 1825</small>
- family Taiwanasteridae <small>Wang, 1984</small>
- family Scutellinidae <small>Pomel, 1888a</small> âÂÂ
- family Clypeidae <small>Lambert, 1898</small> âÂÂ
- family Clypeolampadidae <small>Kier, 1962</small> âÂÂ
- order Echinolampadoida
- family Echinolampadidae <small>Gray, 1851a</small>
- family Nucleolitidae <small>L. Agassiz & Desor, 1847</small> âÂÂ
- family Pygaulidae <small>Lambert, 1905</small> âÂÂ
- genus Pygolampas<small> Saucède, Dudicourt & Courville, 2012</small> âÂÂ
References