I need to thank, Mike Everhart & Shawn Hamm for images, Pieter DeSchutter & David Ward for modern literature, Mikael Siverson for his insight & comments and Earl Manning for obscure literature & observations on the topic.
||Some authors refer to a small tooth in the first position of the anterior hollow as a parasymphyseal. This website considers it an anterior and refers to it as an A0 when present.|
||Case (1980: 81) argues that Scapanorhynchus has priority and the extant taxon should be included in Woodward's (1899) genus.|
||1844 is the normally cited date for S. raphiodon. Ward (pers. com. 2008) notes that the plate (37a) was published in 1844 while the text was 1843. Sherborn's Index Animalium as online at the Smithsonian notes it as: raphiodon, Odontaspis, J. L. R. Agassiz, Poiss. Foss., Feuilleton, 55 (1835) [n. n.]. Manning (pers. com. 2008) notes that
Meyer (1974) cites Agassiz (1833-1843) and
Woodward, 1911, p. 211, gives the citation as: "1843. Lamna (Odontaspis) raphiodon L. Agassiz, Poiss. Foss., vol. iii, p. 296, pl. xxxvii-a, figs. 12-16 (non fig. 11)." All things considered, this website will go with 1843.|
||Siverson (pers com 2007): "Basically, in my view this nominal species [S. raphiodon] is based on indeterminable material, almost certainly including teeth (more precisely cusps) from more than one genus. It is therefore a nomen dubium as the name can only be applied with confidence to the syntypes. I challenge anyone who disagrees with me to please show me the diagnostic features of this nominal species. The stratigraphic origin of the syntypes is unknown so it is not possible to collect better preserved material from a type stratum. I don't even think a lectotype has been designated so there would not even be a (unknown) type stratum." |
||The published literature yields two dates for S. texanus, 1849 and 1852. Manning (pers com. 2008) notes: "I take this to mean [the title] that this is a big book about Roemer's travels in Texas, probably a guidebook for German immigrants. I see something about a natural history appendix (naturwissenschaftlichen Anhange), and maps (Karte), but nothing about plates (Tafeln). The 100-page 1852 paper says prominently, in its subtitle, that it has 11 plates. For now, the website will follow the consensus citation 1849.|
||Manning (pers com 2008) notes, "I had a look at his descriptions (pp. 29-31, in German, which makes it more difficult), and they're very professional, even starting with Latin descriptions. His text and synonymy-list citations are appropriate (Agassiz, 1843; Reuss, 1845; his own 1849 book; Dixon, 1850; - I give him extra credit for noting the similarity of his L. texana to Morton's 1834 pl. 11, fig. 2; and Reuss' Turonian "L. plicatella", now S. r. raphiodon). I'd guess he was taught paleontology very rigorously, in a strict German school, and that this is his own work.
I might note that the source of all these fossils is "an der Furt der Guadalupe bei Neu-Braunfels." - at the ford of the Guadalupe River, near [likely just SE of] New Braunfels, between San Antonio and Austin, in SE Comal Co., south-central Texas. This is probably Campanian Taylor Grp. New Braunfels was an old German settlement in Texas. The faulting over the Balcones Escarpment (the edge of the E. Cret. limestones, where the Gulfian Gulf Coastal Plain starts) is so bad in this area, you'd never get the exact bed they come from (maybe from the ammonites). Actually, I'm sort of disappointed that Welton & Farish (1993, p. 45) didn't attempt to do this, it being a fine old Texas Cret. species. As I've said, I distrust their (and Case & Cappetta, 1997's) Maastr. Scapanorhynchus records."|