The cleithrum (pl.: cleithra) is a membrane bone which first appears as part of the skeleton in primitive bony fish, where it runs vertically along the...
3 KB (266 words) - 16:58, 4 May 2024
is associated with the pectoral fin; they also have a bone called the cleithrum. In such fish, the paired clavicles run behind and below the gills on...
18 KB (2,063 words) - 17:56, 23 August 2024
This, the type species, has a U-shaped head, with a flattened skull and cleithrum. Electrophorus voltai de Santana, Wosiacki, Crampton, Mark H. Sabaj, Dillman...
57 KB (5,757 words) - 21:07, 20 August 2024
from their ancestral external armor plates. In digitless choanates, the cleithrum, clavicle, and interclavicle are dermal and linked to the caudal part...
15 KB (1,853 words) - 05:08, 15 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
39 KB (3,346 words) - 17:26, 24 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
102 KB (10,245 words) - 11:48, 22 August 2024
embryonic development is considered finished when a bone called the cleithrum becomes visible. In animals that hatch from an egg, such as birds, a young...
31 KB (3,290 words) - 12:16, 20 August 2024
fusion of caudal ribs Trunk ribs mostly single headed Pectoral Region Cleithrum absent Pelvic Region Modified ilium Limb Region Tubular bone lost Entepicondylar...
21 KB (1,000 words) - 23:41, 29 July 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
105 KB (12,182 words) - 11:18, 15 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
143 KB (14,295 words) - 19:57, 22 August 2024
resulting in improved terrestrial locomotion. The early sarcopterygians' cleithrum was retained as the clavicle, and the interclavicle was well-developed...
104 KB (10,592 words) - 09:21, 23 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
30 KB (3,593 words) - 05:40, 25 July 2024
most prominent on the dorsal pterygiophores, but is also present on the cleithrum and along the supraoccipital bone. The rest of the skeleton is cartilaginous...
16 KB (1,925 words) - 16:08, 29 June 2024
ornamentation on the cleithrum is Parmastega, though ornamentation covers far less of the cleithrum in that taxon. The cleithrum tapers to a point anteroventrally...
4 KB (441 words) - 19:53, 29 February 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
26 KB (1,988 words) - 02:20, 9 April 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
9 KB (862 words) - 11:04, 4 August 2023
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
81 KB (8,895 words) - 04:34, 18 August 2024
notable fossil is a large endochondral shoulder girdle consisting of the cleithrum, scapula, and coracoid (but not the interclavicle and clavicles), all...
29 KB (3,305 words) - 10:40, 22 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
47 KB (5,722 words) - 14:43, 22 June 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
25 KB (2,853 words) - 14:33, 15 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
31 KB (2,957 words) - 18:02, 8 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
72 KB (6,339 words) - 01:20, 4 August 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
20 KB (2,058 words) - 00:49, 14 August 2024
the rays) and two movable hinge joints: a 'shoulder' joint where the cleithrum meets the radials and an 'intra-fin' joint where the radials meet the...
22 KB (2,496 words) - 18:12, 15 August 2024
third such taxa from Gondwana. Tutusius umlambo is known from a single cleithrum (a bone of the shoulder girdle) discovered at the Waterloo Farm lagerstätte...
4 KB (469 words) - 19:53, 29 February 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
15 KB (1,305 words) - 12:21, 5 June 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
27 KB (2,822 words) - 08:50, 2 June 2024
skull, resulting in improved terrestrial locomotion. The crossopterygian cleithrum was retained as the clavicle, and the interclavicle was well-developed...
11 KB (1,338 words) - 23:41, 22 July 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
13 KB (1,492 words) - 22:54, 3 July 2024
determination Anguilliformity Bone dermal intramembranous ossification Cleithrum Chromatophore Fins dorsal fin Gill branchial arch gill raker gill slit...
4 KB (444 words) - 13:04, 25 August 2024