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Bournelyreidus
Taxonomy
Bournelyreidus was named by Von Bakel et al. (2012). It is not extant. Its type is Hemioon eysunesensis.
It was assigned to Lyreidinae by van Bakel et al. (2012); and to Marylyreidinae by Karasawa et al. (2014), Luque et al. (2017) and Schweitzer et al. (2018).
It was assigned to Lyreidinae by van Bakel et al. (2012); and to Marylyreidinae by Karasawa et al. (2014), Luque et al. (2017) and Schweitzer et al. (2018).
Synonymy list
| Year | Name and author |
|---|---|
| 2012 | Bournelyreidus Von Bakel et al. |
| 2012 | Bournelyreidus van Bakel et al. p. 78 |
| 2014 | Bournelyreidus Karasawa et al. p. 254 |
| 2017 | Bournelyreidus Luque et al. p. 41 |
| 2018 | Bournelyreidus Schweitzer et al. p. 22 |
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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. †Bournelyreidus Von Bakel et al. 2012
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†Bournelyreidus ericksoni Kornecki et al. 2017
†Bournelyreidus eysunesensis Collins and Wienberg Rasmussen 1992
†Bournelyreidus laevis Schlüter 1868
†Bournelyreidus oaheensis Bishop 1978
†Bournelyreidus paredonensis Vega et al. 2023
†Bournelyreidus teodorii van Bakel et al. 2012
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. W. M. van Bakel et al. 2012 | Carapace oval, elongated, widest at one-third of total carapace length from front, nearly flat in lon- gitudinal, convex in transverse cross section. Posterolateral margin with divergent posterior portion, vertical ante- rior portion; anterolateral margin shorter, with 2 curved, spiniform teeth. Orbitofrontal margin straight, occupying more than half of maximum carapace width. Outer orbital corners prominent, supraorbital borders with 2 orbital notches. Rostrum trapezoidal, bifid or triangular, with single apex, excavated. Branchiocardiac grooves shallow, well-defined, cervical groove absent. Carapace surface with minute pits, granules (upright nodes). Pterygostome tumid, with a granular blunt ridge, posterior corner recessed for relatively large mxp3 coxa. Mxp3 strongly elon- gated, oxystomian condition; exopod narrow, slightly shorter than equal-sized endopod ischium, merus. Bran- chiostegite reduced, pleurites exposed. Sternite 3 crown shaped; sternite 4 long, wide anteriorly, forming junction with pterygostome, lateral sides strongly concave. Episternite 4 rather small. Sternite 5 large, broadly extended between P1, P2, reaching pleurites. No medial line, at least on sternites 1 6. Holding mechanism present (see note under B. tridens n. comb.). Chelipeds flattened, fixed finger not downturned (B. carlilensis n. comb.; Feldmann & Maxey 1980: 859, text-fig. 1E), closing, with sharp teeth; lower margin of chelipeds smooth to spinose. P2–P4 with paddle-shaped propodus, dactylus; P5 reduced, subdorsal. Abdomen flexed under carapace, abdominal somite 3 with medial elevation, somite 4 with prominent tubercle, somite 6 long (Collins & Wienberg Rasmussen 1992: 21). |