| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ulminium atlanticum
Taxonomy
Ulminium atlanticum was named by Romero (1970). It is considered to be a form taxon. Its type specimen is LPPB 7812 a-m; pm LPPB 774-797, a wood, and it is a 3D fossil preserving soft parts.
It was recombined as Laurinoxylon atlanticum by Brea et al. (2012).
It was recombined as Laurinoxylon atlanticum by Brea et al. (2012).
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Ulminium atlanticum Romero |
| 2012 | Laurinoxylon atlanticum Brea et al. |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Ulminium atlanticum Romero 1970
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. J. Romero 1970 | Xilema de porosidad difusa, densidad de poros 18/mm², con poros solitarios ovales (eje mayor radial) o múltiples radiales cortos. Elementos vasculares de 304 µ de largo y 87.7 µ de diámetro tangencial (promedios), generalmente con apéndices. Placa de perforación simple poco a muy inclinada. Punteaduras areoladas multiseriadas (4- 10 series) generalmente alternas, a veces opuestas, circulares a poligonales, abertura inclusa. Parénquima vertical vasicéntrico a aliforme, localmente confluente ,moderadamente abundante. Radios leñosos bi a uniseriados bi a uniseriados, raramente triseriados, excepcionalmente tetraseriados: heterogéneos II B (Kribbs); células con puntuaciones simples, a veces alargadas radialmente en los campos de cruzamiento, algunas con contenidos oscuros; ancho 17 µ alto 11.6 µ o 196.9 µ, número por mm 17.7 (promedios). Fibras en hileras radiales, cuadrangulares a poligonales; paredes delgadas (2µ) algunas con escasos tabiques; diámetros promedios 15.4 µ. |