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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Heckethornia alticapitis
Taxonomy
Psalikilopsis alticapitis was named by Young (1973) [Questionably assigned to this genus by author. Paratypes: BYU 2103-4, 2174.]. Its type specimen is BYU 2102, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is H-20, which is in a Blackhillsian open shallow subtidal grainstone in the Fillmore Formation of Utah.
It was recombined as Heckethornia alticapitis by McAdams and Adrain (2009).
It was recombined as Heckethornia alticapitis by McAdams and Adrain (2009).
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Psalikilopsis alticapitis Young p. 106 figs. Pl. 4, figs. 1-3 |
| 2009 | Heckethornia alticapitis McAdams and Adrain p. 902 |
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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.
†Heckethornia alticapitis Young 1973
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Fortey and Owens 1999, Aberhan et al. 2004, Alvarez et al. 2008 | |||||
Age range: base of the Blackhillsian to the top of the Whiterockian or 475.30000 to 457.30000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Blackhillsian | USA (Utah) | Heckethornia alticapitis (105780) Psalikilopsis alticapitis (type locality: 69261) | |
| Whiterockian | USA (Utah) | Heckethornia alticapitis (106370) |