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Carcharhinus dicelmai

Chondrichthyes - Carcharhiniformes - Carcharhinidae

Taxonomy
Carcharhinus dicelmai was named by Collareta et al. (2022). Its type specimen is MUSM 4697, a tooth (left upper lateral tooth), and it is a 3D body fossil. Its type locality is Zamaca, which is in a Burdigalian coastal horizon in the Chilcatay Formation of Peru.

Sister species lacking formal opinion data
C. albomarginatus, C. balochensis, C. brachiurus, C. brachurus, C. longimanus

Synonymy list
YearName and author
2022Carcharhinus dicelmai Collareta et al. p. 6 figs. Figs. 3, 4

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
RankNameAuthor
subclassElasmobranchiiBonaparte 1838
infraclassEuselachii()
—NeoselachiiCompagno 1977
superorderGaleomorphiiCompagno 1973
orderCarcharhiniformesCompagno 1973
familyCarcharhinidaeJordan and Evermann 1896
genusCarcharhinusde Blainville 1816
speciesdicelmai

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Carcharhinus dicelmai Collareta et al. 2022
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Diagnosis
ReferenceDiagnosis
A. Collareta et al. 2022Carcharhinus dicelmai sp. nov. differs from all other extant and extinct species of Carcharhinus as its upper teeth display the following unique combination of characters: crown provided with a triangular, narrow-based, slender, smooth-edged cusp; cusp labiolingually thick at base, semicylindrical, sigmoidal, exhibiting a marked coronal twist that causes the labial face to be partially visible in apical view; cusp apex bending towards the commissure in lateral teeth; mesial and distal heels much thinner labiolingually than the cusp, the latter being separated from the distal heel by a clear notch; distal heel featuring one to five, coarse, angularly lobate serrae that become more prominent toward
the base of the cusp; similar serrae often present on the mesial heel too.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektonico
Diet: carnivoreo
Created: 2009-07-21 06:53:24
Modified: 2009-07-21 08:53:24
Source: o = order, subp = subphylum
References: Carroll 1988, Wagner 2023, Hendy et al. 2009

Age range: Burdigalian or 20.44000 to 15.97000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Burdigalian20.44 - 15.97Peru (Ica) Carcharhinus dicelmai (type locality: 100330)