BioOne.org will be down briefly for maintenance on 17 December 2024 between 18:00-22:00 Pacific Time US. We apologize for any inconvenience.
How to translate text using browser tools
1 July 2000 A PRIMITIVE HALOBIA (BIVALVIA: HALOBIOIDEA) FROM THE TRIASSIC OF NORTHEAST BRITISH COLUMBIA
Christopher A. McRoberts
Author Affiliations +
Abstract

Halobia daonellaformis new species is described from the lowermost Carnian of northeast British Columbia. Halobia daonellaformis n. sp. is regarded as a primitive Halobia characterized by external ornamentation similar to Daonella lommeli, but with a poorly developed anterior auricle. Morphologic characters of H. daonellaformis n. sp. suggest that Halobia may be not a natural taxon but a polyphyletic group with one or more ancestors from Daonella and Aparimella and/or other posidoniid(s). The sudden appearance of Halobia throughout the marine Triassic suggests a rapid dispersal mechanism following a Ladinian origin. Larval shell morphology indicates a planktotrophic developmental strategy for H. daonellaformis n. sp., and by extension to other halobiids, which may explain the widespread distribution of many halobiid species.

Christopher A. McRoberts "A PRIMITIVE HALOBIA (BIVALVIA: HALOBIOIDEA) FROM THE TRIASSIC OF NORTHEAST BRITISH COLUMBIA," Journal of Paleontology 74(4), 599-603, (1 July 2000). https://doi.org/10.1666/0022-3360(2000)074<0599:APHBHF>2.0.CO;2
Accepted: 1 February 2000; Published: 1 July 2000
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top