Dioplotherium
genus of mammals
Dioplotherium is an extinct genus of sirenian related to the dugongs, known from Neogene-aged deposits from southern North America.
Species
Dioplotherium allisoni, described as Halianassa allisoni by Kilmer in 1965 from remains found in the middle Miocene Isidro Formation of Baja California, Mexico, and known from marine deposits in Baja California and California. The species was referred to Dioplotherium by Domning in 1989.
Dioplotherium manigaulti, was described by Edward Drinker Cope in 1883 on the basis of a partial premaxilla with a tusk found near Charleston, South Carolina. Nothing more was known of the species until a nearly complete skull was found in the Suwannee River by Gary S. Morgan in 1985. Additional fossils ascribed to D. manigaulti have been found in the Charleston Phosphate Beds and Ashley River phosphate deposits in South Carolina, and in exposures of the Hawthorn Group in Jackson County, Florida.
The public source identifies “Dioplotherium” as genus of mammals. This brief keeps that definition visible, then builds a research path around Dioplotherium, genus and mammals.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Dioplotherium”, the useful work is to connect “genus of mammals” to the records capable of establishing context and consequence.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Apr 6, 2025. The linked authority identifier is Q676188. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1965, 1989, 1883 and 1985.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Three-step research path
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This entry incorporates text from “Dioplotherium” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.