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Pilummede
Taxonomy
Pilummede was named by Ossó and Clements (2021). Its type is Pilummede penderensis.
It was considered a nomen nudum by Ossó and Clements (2016).
It was assigned to Pilumnoidea by Ossó and Clements (2021); and to Pilumninae by Schweitzer et al. (2022).
It was considered a nomen nudum by Ossó and Clements (2016).
It was assigned to Pilumnoidea by Ossó and Clements (2021); and to Pilumninae by Schweitzer et al. (2022).
Species
P. bakeri, P. penderensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Pilummede Ossó and Clements p. 136 |
| 2022 | Pilummede Schweitzer et al. p. 7 |
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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. †Pilummede Ossó and Clements 2021
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†Pilummede bakeri Rathbun 1935
†Pilummede penderensis Ossó and Clements 2021
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| À. Ossó and D. Clements 2021 | Carapace relatively small sized, suboctagonal, wider than long, sculpted. Maximum width at level of fourth anterolateral tooth, about 0.75 L/W ratio. Fronto orbital ratio about 0.60. Slightly vaulted longitudinally at anterior third. Regions well marked, inflated, except urogastric region; all inflated regions densely covered by clusters of mushroom shaped granules. Grooves separating regions smooth. Front bilobed densely granulated, with medial notch. Orbits forward directed; supraorbital margin with two fissures separated by a medial tooth; inner orbital tooth separated from the front by a notch; infraorbital margin visible dorsally. Anterolateral margin convex with four granulated teeth or nodes (excluding exorbital tooth). Posterolateral margin markedly convex. Posterior margin straight, rimmed, medially concave, ornate with a row of granules. Cervical and gastrohepatic grooves well-marked. Gastric process well-marked; epigastric lobes swollen; protogastric lobes swollen, anterior portion medially depressed, J shaped; mesogastric lobe broad posteriorly, anterior portion slender, reaching half of the protogastric lobes; metagastric lobe indistinct; urogastric region depressed, smooth, separated of meso-metagastric lobe by two gastric pits. Cardiac region swollen, broadly T-shaped. Intestinal region transversely elongate, inflated, medially divided by small smooth depression. Thoracic sternum flattened, finely granulated; sternite 3 inverted subtriangular; sternite 4 medially divided in two subtrapezoidal halves by sterno-abdominal cavity, lateral edges with parallel grooves; episternite well- developed, downward directed; sternite 5 subtrapezoidal laterally elongate, ending in a well-developed, downward directed episternite. Suture 2/3 complete; suture 3/4 laterally visible, medially marked by a transverse groove; suture 4/5 complete, possibly interrupted medially. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Turnsek 1997, Aberhan 1992 | |||||
Age range: base of the Bartonian to the top of the Late/Upper Eocene or 41.03000 to 33.90000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bartonian | USA (North Carolina) | P. penderensis (191733) Titanocarcinus euglyphos (7299) | |
| Late/Upper Eocene | USA (Texas) | Plagiolophus bakeri (142985) | |
| Priabonian | USA (North Carolina) | P. penderensis (191735) |