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Bairstowius
Taxonomy
Bairstowius was named by Jeletzky (1994).
It was assigned to Hastitidae by Doyle et al. (1994) and Weis et al. (2015).
It was assigned to Hastitidae by Doyle et al. (1994) and Weis et al. (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Bairstowius Doyle et al. p. 11 |
| 1994 | Bairstowius Jeletzky pp. 11-12 fig. 4 |
| 2015 | Bairstowius Weis et al. |
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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.
G. †Bairstowius Jeletzky 1994
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†Bairstowius junceus Phillips 1867
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Invalid names: Hastites junceus Phillips 1927 [synonym], Pseudohastites arundineus Lang 1928 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Doyle et al. 1994 | Hastitidae with an elongated, spicular to feebly hastate, compressed to moderately compressed rostrum. Apical section long, tapering slowly to an acute, needlelike apex. Rostrum-bearing, incised, triple longitudinal lateral furrows of Hastites-like form; apex commonly striated. Alveolus shallow (one-eighth to one-twentieth of rostrum length), ortholineate. Phragmocone structure as in Hastites. Earliest juvenile rostra conorostrid, increasing rapidly in length and obtaining spicular or subhastate form early in ontogeny. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Sinemurian to the top of the Early/Lower Pliensbachian or 196.50000 to 183.00000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Sinemurian | Italy | B. sp. A, B. junceus (175938) | |
| Early/Lower Pliensbachian | United Kingdom (England) | B. junceus (176440) | |
| Early/Lower Pliensbachian | United Kingdom (Gloucestershire) | Pseudohastites junceus (204128) | |
| Jamesoni | United Kingdom (Dorset) | Pseudohastites arundineus (159822 159828 159845 159846 159847 159848 159849 159850) Pseudohastites junceus (159833 159834 159840 159841 159842 159843 159844) Pseudohastites junceus, Pseudohastites arundineus (159830 159839) |