![](https://static.wixstatic.com/media/04fdd9_8d2d389c80324413956bcdc79b3e90fd~mv2.jpg/v1/fill/w_832,h_242,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/04fdd9_8d2d389c80324413956bcdc79b3e90fd~mv2.jpg)
Posted: May 19 2008
Bostrycapulus aculeatus (Gmelin, 1791), (Crepidula) Spiny Slipper Shell
![Rbaculeatus1](https://static.wixstatic.com/media/04fdd9_5522045b28264b05828fe72731ef3819~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_5522045b28264b05828fe72731ef3819~mv2.jpg)
![Rbaculeatus2](https://static.wixstatic.com/media/04fdd9_e8d575b32b7448259c24223292d5218c~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_e8d575b32b7448259c24223292d5218c~mv2.jpg)
![Rbaculeatus3](https://static.wixstatic.com/media/04fdd9_c13b5998f26a4429b0a8d0f3e3781ba6~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_c13b5998f26a4429b0a8d0f3e3781ba6~mv2.jpg)
![Rbaculeatus4](https://static.wixstatic.com/media/04fdd9_149f36f26a9d4d709d2fffef5cc00de1~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_149f36f26a9d4d709d2fffef5cc00de1~mv2.jpg)
![Rbaculeatus5](https://static.wixstatic.com/media/04fdd9_56257383b0a44d58a305ac90db4af708~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_56257383b0a44d58a305ac90db4af708~mv2.jpg)
![Rbaculeatus6](https://static.wixstatic.com/media/04fdd9_44c9b6da76e7437aa6e6aeb203730fb4~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_44c9b6da76e7437aa6e6aeb203730fb4~mv2.jpg)
![Rbaculeatus7](https://static.wixstatic.com/media/04fdd9_722a2eaa02db42b7b746589fe9714ddd~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_722a2eaa02db42b7b746589fe9714ddd~mv2.jpg)
![Rbaculeatus8](https://static.wixstatic.com/media/04fdd9_1f1de40d0ae3496794c7c5f73be91fe3~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_1f1de40d0ae3496794c7c5f73be91fe3~mv2.jpg)
![Rbaculeatus9](https://static.wixstatic.com/media/04fdd9_5a46efdb8a0f44c9a7d980206e12966b~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_5a46efdb8a0f44c9a7d980206e12966b~mv2.jpg)
![Rbaculeatus10](https://static.wixstatic.com/media/04fdd9_585dbbb174c14ba28c8d72f472ba0a8c~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_585dbbb174c14ba28c8d72f472ba0a8c~mv2.jpg)
![Rbaculeatus12](https://static.wixstatic.com/media/04fdd9_674b7584978a4b9992ea2626137dc587~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_674b7584978a4b9992ea2626137dc587~mv2.jpg)
![Rbaculeatus13](https://static.wixstatic.com/media/04fdd9_4d84daf3221a4c279296204e38f5a2d2~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_4d84daf3221a4c279296204e38f5a2d2~mv2.jpg)
![revBaculeatus17](https://static.wixstatic.com/media/04fdd9_82fb903cf06342ac9174abc8ff828ed0~mv2.jpg/v1/fill/w_144,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_82fb903cf06342ac9174abc8ff828ed0~mv2.jpg)
![Rbaculeatus11](https://static.wixstatic.com/media/04fdd9_2d1a985a61e14d2088292584478c0aa8~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_2d1a985a61e14d2088292584478c0aa8~mv2.jpg)
![Rbaculeatus14](https://static.wixstatic.com/media/04fdd9_0f14e986ede9496189e31a54a599a18f~mv2.jpg/v1/fill/w_144,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_0f14e986ede9496189e31a54a599a18f~mv2.jpg)
![RevBaculeatus15](https://static.wixstatic.com/media/04fdd9_c0c139d9a2b5483eb762899e3ca10bc0~mv2.jpg/v1/fill/w_144,h_96,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_c0c139d9a2b5483eb762899e3ca10bc0~mv2.jpg)
![revBaculeatus16](https://static.wixstatic.com/media/04fdd9_abc7df2816e747c7b023ec87d63d5532~mv2.jpg/v1/fill/w_144,h_96,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_abc7df2816e747c7b023ec87d63d5532~mv2.jpg)
![ba](https://static.wixstatic.com/media/04fdd9_432d270b69b74ab39210d0a9f4ce61e2~mv2.jpg/v1/fill/w_144,h_100,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_432d270b69b74ab39210d0a9f4ce61e2~mv2.jpg)
![Bostrycapulus aculeatus Matanzas](https://static.wixstatic.com/media/04fdd9_6f60dba16f244aa19374e4517d319c22~mv2.jpg/v1/fill/w_147,h_83,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04fdd9_6f60dba16f244aa19374e4517d319c22~mv2.jpg)
Additional notes:
I posted a notice on Conch-L regarding this presentation. As a result Carole Marshall asked:
"Where was the elevation in status written? It seems a lot of work is done and things changed without knowing where or who did the work. Were any other Crepidula involved? Most of the new books, papers etc reflect a change, but few recite citations."
Carole's question was answered as follows:
Fabio Moretzsohn replied:
"The 'recent' move of subgenus Bostrycapulus to the generic level was proposed by Simone (2002), based on a comparative anatomical study and morphological phylogeny of the Calyptraeoidea. His findings regarding the position of Bostrycapulus aculeatus is also supported by a molecular phylogeny (based on cytochrome oxidase I data) by Collin (2003).
Collin, R. 2003. Phylogenetic relationships among calyptraeid gastropods and their implications for the biogeography of marine speciation. Systematic Biology 52(5): 618–640.
Simone, L. R. L. 2002. Comparative morphological study and phylogeny of representatives of the superfamily Calyptraeoidea (including Hipponicoidea)(Mollusca, Caenogastropoda). Biota Neotropica 2(2): 1–137."
However, Harry Lee proffered:
"Recently moved from Crepidula s.s. to Bostrycapulus by Olsson and Harbison, 1953 .... Olsson, A.A. and A. Harbison, 1953. Pliocene Mollusca of southern Florida. Monograph No. 8 Academy of Natural Sciences of Philadelphia, v + pp. 1-457 + 65 pls." (Lee, 2009: 75, 177).
Although Bostrycapulus was erected as a subgenus of Crepidula Lamarck, 1799 with its type species designated: "Crepidula aculeata (Gmelin)" [more properly Patella aculeata Gmelin, 1791] on page 279 of this work, the name does not appear in the index or in any of the plates.
'Recently' in this case means 2005: <http://www3.interscience.wiley.com/journal...ETRY=1&SRETRY=0 >."