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Taxonomy
Dechenella (Monodechenella) was named by Stumm (1953) [Monodechenella: Sepkoski's age data: D Eife Sepkoski's reference number: 1106
Monodechella: Sepkoski's age data: D Give-l Sepkoski's reference number: 1106]. Its type is Proetus macrocephalus.
It was reranked as Monodechenella by Lieberman (1994), Jell and Adrain (2002), Sepkoski (2002), Owens (2006) and Vanderlaan and Ebach (2015).
It was assigned to Dechenella by Stumm (1953); to Proetidae by Jell and Adrain (2002); to Proetida by Sepkoski (2002); and to Crassiproetinae by Lieberman (1994), Owens (2006) and Vanderlaan and Ebach (2015).
It was reranked as Monodechenella by Lieberman (1994), Jell and Adrain (2002), Sepkoski (2002), Owens (2006) and Vanderlaan and Ebach (2015).
It was assigned to Dechenella by Stumm (1953); to Proetidae by Jell and Adrain (2002); to Proetida by Sepkoski (2002); and to Crassiproetinae by Lieberman (1994), Owens (2006) and Vanderlaan and Ebach (2015).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Dechenella (Monodechenella) Stumm p. 123 |
| 1963 | Conophillipsia Roberts |
| 1994 | Monodechenella Lieberman p. 137 |
| 2002 | Conophillipsia Jell and Adrain p. 360 |
| 2002 | Monodechenella Jell and Adrain pp. 408, 477 |
| 2002 | Conophillipsia Sepkoski |
| 2002 | Monodechenella Sepkoski |
| 2006 | Monodechenella Owens |
| 2015 | Monodechenella Vanderlaan and Ebach p. 19 |
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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.
Subg. †Dechenella (Monodechenella) Stumm 1953
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. C. Stumm 1953 | Glabella broad, moderately to highly convex, barely tapering anteriorly. Anterior pairs of glabellar furrows typically obsolete, rarely faintly defined; posterior pair well developed, deeply incised, extending in an axially convex direction from the dorsal furrow to the occipital furrow, isolating two posterolateral, subtrigonal glabellar lobes. Occipital lobes of medium size, elongate, suboval in outline. Thorax with wide, convex axis and convex pleurae having deeply sulcate segments. Pygidium with arched axis and highly convex, distinct segments. Entire test heavily tuberculate, tubercles on pygidial segments in two parallel rows. | |
| B. S. Lieberman 1994 | Same as for "Thebanaspis clade"; also, anterior and posterior portions of palpebrum, interior to margins of eye, asymmetrical with posterior portion larger suchthatpalpebrumishalfpear-shaped;an- terior portion of glabella contacts anterior border furrow; portion of SO anterior of in- traoccipital lobe deflects more sharply lat- erallyanteriorly;posteriorportionofeyedis- placed far anterior of anterior margin of SO, anterior of intraoccipital lobe; anterior ce- phalicbordershort,sagittallengthone-third length between distal tips of S1 and S2. |