(Mah, Christopher L. 2017)
|Notice:||This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see
). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly.
This page should be cited as follows (rationale):
Citation formats to copy and paste
TY - JOUR
- Mediaster aequalis Mah, Christopher L., 2017, Zootaxa 4271: 5-5.
Most Goniasteridae are identified by a heavily calcified endoskeleton, a marginal plate series of blocky ossicles forming a distinct border around the periphery of the body, papulae limited to the abactinal surface, and a large disk with a relatively flattened body shape. This fundamental body form has been observed in other families in the Valvatida, including the Ophidiasteridae, Oreasteridae, Odontasteridae among others, suggesting plesiomorphy and/or convergence (e.g., Blake 1987). Limits of the goniasterid body form have not been comprehensively tested. Although goniasterid monophyly has been at least partially upheld by molecular data (Mah and Foltz 2011), numerous goniasterid genera display morphology intermediate with other families (Ophidiasteridae, Oreasteridae, etc.) within the Valvatacea suggesting shared ancestries. Anthenea and Goniodiscaste r, for example, have been assigned to both the Goniasteridae and the Oreasteridae by different authors. As discussed below, several members of the Ophidiasteridae have been historically considered as goniasterid-like, although these have not been considered as contentious as those taxa intermediate between goniasterids and oreasterids, the discovery of specimens displaying ophidiasterid/goniasterid characters challenges accepted taxonomic definitions for these groups.
- Mah, Christopher L.; 2017: Overview of the Ferdina - like Goniasteridae (Echinodermata: Asteroidea) including a new subfamily, three new genera and fourteen new species, Zootaxa 4271: 5-5. doi