Abstract

PERTOSSI, Renata M.  and  MARTINEZ, Mariano I.. Inventory of the specimens of the Class Crinoidea (Echinodermata) deposited at the Invertebrates collection at the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”. Rev. Mus. Argent. Cienc. Nat. [online]. 2021, vol.23, n.1, pp.101-108. ISSN 1853-0400.  http://dx.doi.org/10.22179/revmacn.23.678.

The invertebrate collection of the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-In) is one of the most important in Latin America. It has more than 1411 type batches with ~90 type specimens of echinoderms. For the present study we analyzed 56 lots of crinoids from the MACN-In. We also checked and updated the identification, when necessary. Seven species belonging to 6 genera were identified; 23 specimens remain unidentified. The diversity of crinoids for Chile, Uruguay and Brazil and Antarctica is dis cussed. The MACN-In has several lots of crinoids from different parts of the world and numerous specimens of the 2 representative species from Argentina, Isometra vivipara Mortensen, 1917 and Phrixometra nutrix (Mortensen, 1918). This is the first published inventory of crinoids from samples deposited at the MACN-In collection, which will be a useful tool for future studies regarding echinoderms, particularly crinoids.

Keywords : Crinoids; Argentina; Antarctica; MACN-In; Lots.

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