Chlidonophora Dall, 1903

Bitner, Maria Aleksandra & Logan, Alan, 2016, Recent Brachiopoda from the Mozambique-Madagascar area, western Indian Ocean, Zoosystema 38 (1), pp. 5-41 : 16

publication ID

https://doi.org/ 10.5252/z2016n1a1

publication LSID

urn:lsid:zoobank.org:pub:96BFE594-1B39-4541-9441-181617BD4CF9

persistent identifier

https://treatment.plazi.org/id/AC16FF1A-7E4E-FF99-ABC6-FCC12D6222EA

treatment provided by

Felipe (2021-03-03 16:45:34, last updated by Plazi 2023-11-01 22:51:56)

scientific name

Chlidonophora Dall, 1903
status

 

Genus Chlidonophora Dall, 1903 View in CoL

TYPE SPECIES. — Terebratulina incerta Davidson, 1878 , by original designation of Dall (1903: 1538).

Chlidonophora chuni Blochmann in Chun, 1900 ( Fig. 9 View FIG ; Table 8)

Chlidonophora chuni Blochmann View in CoL in Chun, 1900: 404, 405; Blochmann 1906: 695-696. — Helmcke 1940: 239, fig. 6. — Muir- Wood 1959: 296, pl. 4, figs 5-7. — Cooper 1973a: 13, pl. 8, figs 17-26. — Hiller 1986: 121-123, fig. 11A-H. — Zezina 1981b: 157; 1985: 133; 1987: 555, 556; 2010: 1187.

MATERIAL EXAMINED. — Mozambique Channel. MAINBAZA, stn CP 3145, 12 bivalved specimens, 1 dorsal valve. — Stn CP 3146, 1 bivalved specimen. — Stn CC 3157, 10 bivalved specimens, 1 ventral valve, 3 dorsal valves. — Stn CC 3158, 1 bivalved specimen.

DEPTH RANGE. — 1161-1421 m.

MEASUREMENTS. — See Table 8.

REMARKS

Only two Recent species are known of this genus. Chlidonophora chuni is restricted to the Indian Ocean while C. incerta is from the Atlantic Ocean and Caribbean ( Logan 2007). Muir-Wood (1959: pl. 4, figs 6-7) figured the lophophore but not the loop of C. chuni from Minikoi, surmising it to be similar to that of C. incerta , which she also figured for comparison (her pl. 3, fig. 8). Cooper (1973a: 13), on the other hand, maintained that the loop of C. chuni “contrasts strongly” with that of C. incerta . He illustrated one of Blochmann’s specimens of C. chuni (USNM 110436a) from off the Maldives to show the loop. However, the crural processes in that particular specimen are barely discernible (his pl. 8, fig. 26), whereas in the specimens from Madagascar they can be prominent, pointed and strongly converging, although they do not unite (compare Fig. 9 View FIG G-J and Fig. 9K, L View FIG ). Hiller’s description (1986) of the loop of C. chuni from eastern South Africa is much more in agreement with that seen from Madagascar, although his fig. 11F is similar to Cooper’s. Relative measurements suggest that these differences are not a function of growth stages.

BLOCHMANN F. 1906. - Neue Brachiopoden der Valdivia- und Gaussexpedition. Zoologischer Anzeiger 30: 690 - 702.

CHUN C. 1900. - Aus den Tiefen des Weltmeeres. Jena (G. Fischer), vi + 549 p., 46 pls.

COOPER G. A. 1973 a. - New Brachiopoda from the Indian Ocean. Smithsonian Contributions to Paleobiology 16: 1 - 45.

DALL W. H. 1903. - Contributions to the Tertiary fauna of Florida. Bulletin of the Wagner Free Institute of Science of Philadelphia 3: 1219 - 1620.

HELMCKE J. - G. 1940. - Die Brachiopoden der Deutschen Tiefsee- Expedition. Wissenschaftliche Ergebnisse der Deutschen Tiefsee- Expedition auf dem Dampfer Valdivia, 1898 - 1899 24: 217 - 316.

HILLER N. 1986. - The South African Museum's Meiring Naude cruises. Part 16. Brachiopoda from the 1975 - 1979 cruises. Annals of the South African Museum 97: 97 - 140.

LOGAN A. 2007. - Geographic distribution of extant articulated brachiopods, in SELDEN P. A. (ed.), Treatise on Invertebrate Paleontology. Part H. Brachiopoda Revised. Geological Society of America and University of Kansas. Boulder, Colorado and Lawrence, Kansas, vol. 6: 3082 - 3115.

MUIR- WOOD H. M. 1959. - Report on the Brachiopoda of the John Murray Expedition. Scientific Reports of the John Murray Expedition 1933 - 1934 10: 283 - 317.

ZEZINA O. N. 1981 b. - New and rare cancellothyroid brachiopods. Trudy Instituta Okeanologii 115: 155 - 164 [in Russian with English summary].

ZEZINA O. N. 1985. - Sovremennye brakhiopody i problemy batialnoj zony okeana (Recent brachiopods and problems of the bathyal zone of the ocean). Nauka, Moskva, 244 p.

ZEZINA O. N. 1987. - Brachiopods collected by BENTHEDI- Cruise in the Mozambique Channel. Bulletin du Museum national d'Histoire naturelle, 4 serie, section A, 9: 551 - 563.

Gallery Image

FIG. 9. — Chlidonophora chuni Blochmann,1900,Mozambique Channel,Bazaruto transect,MAINBAZA:A, B, dorsal view of complete specimen (MNHN IB-2013- 55), and enlargement of the umbonal part (B) to show details of the beak, stn CC 3158, 1220-1248 m; C, D, inner view of dorsal valve (MNHN IB-2013-56) with preserved subplectolophous lophophore, (D) enlargement of lophophore, stn CC 3157, 1410-1416 m; E, F, inner view of ventral valve (MNHN IB-2013-57) and enlargement of umbonal part (F), stn CC 3157; G-J, inner and oblique views of dorsal valve (MNHN IB-2013-58), enlargement (I) and tilted view (J) of posterior part to show cardinalia and loop, stn CC 3157; K, L, inner and tilted views of posterior part of dorsal valve (MNHN IB-2013-59), stn CC 3157. All SEMs. Scale bars: A, C, E, G, H, 2 mm; B, F, D, I-L, 1 mm.

CC

CSIRO Canberra Rhizobium Collection

Kingdom

Animalia

Phylum

Brachiopoda

Class

Rhynchonellata

Order

Terebratulida

Family

Chlidonophoridae