Family-level taxonomic concepts for Paleozoic Asteroidea are problematic; data availability for the family Urasterellidae, however, is judged sufficient for familial reappraisal. The survey cannot be fully comprehensive because certain available names are founded on very limited material, with specimens widely scattered among collections. Recognized urasterellid genera include Urasterella Schuchert, 1914; Anthroosasterias Blake, 2017; Meturaster Blake, Guensburg, and Lefebvre, 2016; Salteraster Stürtz, 1893; Staurasterias Blake, 2017; Ulrichaster Spencer, 1950; and Pegoasterella pompom n. gen. n. sp. Other available generic names are held in abeyance. The name Urasterella has approached form-genus status, an outcome exacerbated by incomplete understanding of the type species. Urasterella huxleyi (Billings, 1865) is reassigned to Anthroosasterias. Relatively large specimen suites for Anthroosasterias huxleyi (Billings, 1865) and Salteraster grandis (Meek, 1872) enable some interpretation of urasterellid intrataxon variation, ontogenetic change, and life mode. Morphologic changes accompanying ontogeny of A. huxleyi are argued as favoring a shift from substrate surface feeding to feeding through extension of arms into the water column in a manner comparable to that seen among extant Forcipulatida and ophiurans.UUID: http://zoobank.org/82d2eca7-55e0-42ed-a164-c666652e3972

中文翻译：

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Urasterellidae（古生代小星，棘皮动物）的分类学和功能形态

古生代小行星的科级分类概念是有问题的；然而，Urasterellidae 家族的数据可用性被认为足以进行家族重新评估。该调查不能完全全面，因为某些可用名称建立在非常有限的材料上，标本广泛分布在收藏品中。公认的 urasterellid 属包括乌拉斯特雷拉舒赫特，1914；人猿属布莱克，2017；美图拉斯特布莱克、根斯堡和列斐伏尔，2016；Salteraster施蒂茨，1893；星光菊布莱克，2017；乌尔里切斯特斯宾塞，1950；和Pegoasterella 绒球n. 将军 n. sp。其他可用的通用名称被搁置。名字乌拉斯特雷拉已经接近形属状态，由于对模式物种的不完全理解而加剧了这种结果。乌拉氏菌（比林斯，1865 年）被重新分配到人猿属. 相对较大的样本套件胼胝体（比林斯，1865 年）和巨蜥(Meek, 1872) 能够对 urasterellid 类群内变异、个体发生变化和生活模式进行一些解释。伴随个体发育的形态变化A. huxleyi被认为有利于从基质表面喂养转变为通过将臂延伸到水柱中喂养的方式与现存的 Forcipulatida 和 ophiurans.UUID 中所见的方式相当：http://zoobank.org/82d2eca7-55e0-42ed-a164-c666652e3972