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Hulettia

Taxonomy
Hulettia was named by Schaeffer and Patterson (1984) [Sepkoski's age data: J Bath J Call Sepkoski's reference number: 452]. Its type is Pholidophorus americanus.

It was assigned to Halecostomi by Schaeffer and Patterson (1984); and to Palaeonisciformes by Sepkoski (2002).

Species
H. americana

Synonymy list
YearName and author
1984Hulettia Schaeffer and Patterson p. 14
2002Hulettia Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
RankNameAuthor
superclassGnathostomata
—Osteichthyes()
—Actinopterygii()
—HalecostomiRegan 1903
genusHulettia

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.

G. †Hulettia Schaeffer and Patterson 1984
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†Hulettia americana Eastman 1899
Diagnosis
ReferenceDiagnosis
B. Schaeffer and C. Patterson 1984A generalized halecostome neopterygian with the following combination of primitive and derived characters: braincase with persistent otico-occipital fissure; no supraoccipital; intercalar without membranous outgrowths; parasphenoid broad, toothed, with foramina for efferent pseudobranchial and internal carotid arteries; vomer median; nasals separated by rostral. Nasal processes of premaxillae simple, meeting in midline and occasionally fusing; maxilla free and mobile, extending beneath posterior part of orbit, no supramaxilla. Quadratojugal independent and splintlike. Interopercular present.Posttemporal (suprascapular) with internal process. Large, median basihyal toothplate; no gular. Vertebral column with separate neural arches and dorsal intercalaries throughout; separate ventral intercalaries present only in anterior part of caudal region; unpaired neural spines in posterior half of column. Dorsal and ventral chordal hemicentra meeting as annular chorda centra in mature individuals. No ossified ural/neural arches. At least seven epurals. Hypocaudal skeleton with five elongated preural haemal spines and at least eight unmodified hypurals. No clavicle. Scales rhomboidal, composed of enameloid and bony base; dentine absent. Basal and fringing fulcra on all fins.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Created: 2009-07-20 21:50:54
Modified: 2009-07-20 23:50:54
Source: c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988

Age range: base of the Bathonian to the top of the Tithonian or 168.30000 to 145.00000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Bathonian168.3 - 166.1USA (South Dakota) Pholidophorus americanus (122622)
Kimmeridgian - Tithonian157.3 - 145.0USA (Colorado) H. hawsi (192456) Semionotidae indet. (39421)